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4

Number 4 (four) is an even digit composite number and natural number following 3 and preceding 5.

Properties of the number 4

Nominal4
Cardinalfour
Ordinal4th
Number of digits1
Sum of digits4
Product of digits4
Number parityEven
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Prime Factorization of 4

Prime factorization2 x 2
Prime factorization in exponent form22
Prime factors2
Number of distinct prime factors ω(n)1
Total number of prime factors Ω(n)2
Sum of prime factors2
Product of prime factors2
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Divisors of 4

List of proper divisors 1, 2
List of all dividers1, 2, 4
Number of divisors d(n)3
Sum of all divisors σ(n)7
Aliquot sum 3
4 is a deficient number , since it is larger than the sum of its proper divisors (3). Its deficiency is 1.
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Prime numbers

Is 4 a prime number?No
Is 4 a semiprime number?Yes
Is 4 a Chen prime number?No
Is 4 a Mersenne prime number?No
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Sequences

Is 4 a Catalan number?No
Is 4 a Fibonacci number?No
Is 4 a Idoneal number?Yes: I3
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Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.
4 is not a Happy number
4 is a Humble number
4 is not a Münchhausen number
4 is not a Perfect number
4 is a Perfect square
4 is a Palindrome
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Numeric Bases of 4

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
2Binary1002
3Ternary113
4Quaternary104
5Quinary45
6Senary46
7Septenary47
8Octal48
9Nonary49
10Decimal4
12Duodecimal412
16Hexadecimal416
20Vigesimal420
36Base36436
60Sexagesimal460
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Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
Square of 4 (n2)16
Cube of 4 (n3)64
Square root of 42
Natural Logarithm (ln) of 41.3862943611199
Decimal Logarithm (log) of 40.60205999132796
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Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 4-0.75680249530793
Cosecant of 4-1.3213487088109
Cosine of 4-0.65364362086361
Secant of 4-1.5298856564664
Tangent of 41.1578212823496
Cotangent of 40.86369115445062
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Number parity

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

Is 4 an Even Number?

Yes, the number 4 is an even number.

Is 4 an Odd Number?

No
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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 4 in words is "four", meaning that:
4 is an aban number (a number without the letter a)
4 is an eban number (a number without the letter e)
4 is an iban number (a number without the letter i)
4 is not an oban number (as it contains the letter o)
4 is a tban number (a number without the letter t)
4 is not an uban number (as it contains the letter u)
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Numeral systems

How to write 4 in other number systems?
Bengali numerals
Eastern Arabic numerals٤
Hieroglyphs numeralsused in Ancient Egypt𓏽
Khmer numerals
Japanese numerals
Roman numeralsIV
Thai numerals
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Translation

How do you say 4 in 38 different languages?
Arabicأربعة
Croatiančetiri
Czechčtyři
Danish fire
Dutchvier
Estonianene
Faroesefýre
Filipinoápat
Finnishneljä
Frenchquatre
Greekτέσσερα
Germanvier
Hebrewארבע
Hindiचार
Hungariannégy
Icelandicfjórir
Indonesianempat
Italianquattro
Japanese
Korean
Latviančetri
Lithuanianketuri
Norwegianfire
Persianچهار
Polishcztery
Portuguesequatro
Romanianpatru
Russianчетыре
Serbianчетири
Slovakštyri
Sloveneštiri
Spanish cuatro
Swahilinne
Swedishfyra
Thaiสี่
Turkishdört
Ukrainianчотири
Vietnamesebốn
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Miscellaneous

Number 4 reversed4
ASCII Code4
Unicode CharacterU+0004
Unix TimestampThu, 01 Jan 1970 00:00:04 +0000
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