By choosing I Accept, you consent to our use of cookies and other tracking technologies.

# 99

Number 99 (ninety-nine) is an odd two-digits composite number and natural number following 98 and preceding 100.

## Properties of the number 99

 Nominal 99 Cardinal ninety-nine Ordinal 99th Number of digits 2 Sum of digits 18 Product of digits 81 Number parity Odd
Calculation was done in 0.0000381470 seconds

## Prime Factorization of 99

 Prime factorization 3 x 3 x 11 Prime factorization in exponent form 32 x 11 Prime factors 3, 11 Number of distinct prime factors ω(n) 2 Total number of prime factors Ω(n) 3 Sum of prime factors 14 Product of prime factors 33
Calculation was done in 0.0000081062 seconds

## Divisors of 99

 List of proper divisors 1, 3, 9, 11, 33 List of all dividers 1, 3, 9, 11, 33, 99 Number of divisors d(n) 6 Sum of all divisors σ(n) 156 Aliquot sum 57 99 is a deficient number , since it is larger than the sum of its proper divisors (57). Its deficiency is 42.
Calculation was done in 0.0000250340 seconds

## Prime numbers

 Is 99 a prime number? No Is 99 a semiprime number? No Is 99 a Chen prime number? No Is 99 a Mersenne prime number? No
Calculation was done in 0.0000150204 seconds

## Sequences

 Is 99 a Catalan number? No Is 99 a Fibonacci number? No Is 99 a Idoneal number? No
Calculation was done in 0.0000040531 seconds

## Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.
 99 is not a Happy number 99 is not a Humble number 99 is not a Münchhausen number 99 is not a Perfect number 99 is not a Perfect square 99 is a Palindrome
Calculation was done in 0.0078580379 seconds

## Numeric Bases of 99

In mathematics, a base or radix of a numeral system is the number of unique digits, including zero, used to represent numbers in that system.
BaseSystemValue
2Binary11000112
3Ternary102003
4Quaternary12034
5Quinary3445
6Senary2436
7Septenary2017
8Octal1438
9Nonary1209
10Decimal99
12Duodecimal8312
20Vigesimal4j20
36Base362r36
60Sexagesimal1d60
Calculation was done in 0.0000178814 seconds

## Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
 Square of 99 (n2) 9801 Cube of 99 (n3) 970299 Square root of 99 9.94987 Natural Logarithm (ln) of 99 4.59512 Decimal Logarithm (log) of 99 1.99564
Calculation was done in 0.0000050068 seconds

## Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
 Sine of 99 -0.999207 Cosecant of 99 -1.00079 Cosine of 99 0.0398209 Secant of 99 25.1125 Tangent of 99 -25.0925 Cotangent of 99 -0.0398525
Calculation was done in 0.0000100136 seconds

## Number parity

Parity is the property of an integer of whether it is even or odd.

No

### Is 99 an Odd Number?

Yes, the number 99 is an odd number.
Total number of all odd numbers from 1 to 99 is 50
Sum of all the odd numbers from 1 to 99 are 2500
The sum of all odd numbers is a perfect square: 2500 = 50
An odd number is any integer (a whole number) that cannot be divided by 2 evenly. Odd numbers are the opposite of even numbers.
Calculation was done in 0.0000061989 seconds

## Ban number

In recreational mathematics, a ban number is a number that does not contain a particular letter when spelled out in English; in other words, the letter is "banned".
 The spelling of 99 in words is "ninety-nine", meaning that: 99 is an aban number (a number without the letter a) 99 is not an eban number (as it contains the letter e) 99 is not an iban number (as it contains the letter i) 99 is an oban number (a number without the letter o) 99 is not a tban number (as it contains the letter t) 99 is an uban number (a number without the letter u)
Calculation was done in 0.0000019073 seconds

## Numeral systems

How to write 99 in other number systems?
 Bengali numerals ৯৯ Eastern Arabic numerals ٩٩ Hieroglyphs numeralsused in Ancient Egypt 𓎎𓐂 Khmer numerals ៩៩ Japanese numerals 九十九 Roman numerals XCIX Thai numerals ๙๙
Calculation was done in 0.0000579357 seconds

## Translation

How do you say 99 in 38 different languages?
 Arabic تسعة و تسعون Croatian devedeset i devet Czech devadesát devět Danish ni og halvfems Dutch negenennegentig Estonian blaasieke vɔ asieke Faroese níti­níggju Filipino siyám na pû’t siyám Finnish yhdeksän­kymmentä­yhdeksän French quatre-vingt-dix-neuf Greek εννενήντα εννέα German neun­und­neunzig Hebrew תשעים ותשע Hindi निन्यानबे Hungarian kilencven­kilenc Icelandic níutíu og níu Indonesian sembilan puluh sembilan Italian novantanove Japanese 九十九 Korean 구십구 Latvian deviņdesmit deviņi Lithuanian devyniasdešimt devyni Norwegian nitti­ni Persian نود و نه Polish dziewięćdziesiąt dziewięć Portuguese noventa e nove Romanian nouăzeci şi nouă Russian девяносто девять Serbian деведесет и девет Slovak deväťdesiat­deväť Slovene devetdeset devet Spanish noventa y nueve Swahili tisini na tisa Swedish nittionio Thai เก้า​สิบ​เก้า Turkish doksan dokuz Ukrainian девʼяносто девʼять Vietnamese chín mươi chín
Calculation was done in 0.0135438442 seconds

## Miscellaneous

 Number 99 reversed 99 ASCII Code 99 c Unicode Character U+0063 c Unix Timestamp Thu, 01 Jan 1970 00:01:39 +0000
Calculation was done in 0.0000178814 seconds