90
Number 90 (ninety) is an even two-digits composite number and natural number following 89 and preceding 91.
| Nominal | 90 |
| Cardinal | ninety |
| Ordinal | 90th |
| Number of digits | 2 |
| Sum of digits | 9 |
| Product of digits | 0 |
| Number parity | Even |
Calculation was done in 0.0000371933 seconds
| Prime factorization | 2 x 3 x 3 x 5 |
| Prime factorization in exponent form | 2 x 32 x 5 |
| Prime factors | 2, 3, 5 |
| Number of distinct prime factors ω(n) | 3 |
| Total number of prime factors Ω(n) | 4 |
| Sum of prime factors | 10 |
| Product of prime factors | 30 |
Calculation was done in 0.0000081062 seconds
| List of proper divisors | 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45 |
| List of all dividers | 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90 |
| Number of divisors d(n) | 12 |
| Sum of all divisors σ(n) | 234 |
| Aliquot sum | 144 |
| 90 is an abundant number , because the sum of its proper divisors (144) is greater than itself. Its abundance is 54. |
Calculation was done in 0.0000269413 seconds
| Is 90 a prime number? | No |
| Is 90 a semiprime number? | No |
| Is 90 a Chen prime number? | No |
| Is 90 a Mersenne prime number? | No |
Calculation was done in 0.0000150204 seconds
| Is 90 a Catalan number? | No |
| Is 90 a Fibonacci number? | No |
| Is 90 a Idoneal number? | No |
Calculation was done in 0.0000047684 seconds
| 90 is not a Happy number |
| 90 is a Humble number |
| 90 is not a Münchhausen number |
| 90 is not a Perfect number |
| 90 is not a Perfect square |
| 90 is not a Palindrome |
Calculation was done in 0.0057420731 seconds
| Base | System | Value |
|---|
| 2 | Binary | 10110102 |
| 3 | Ternary | 101003 |
| 4 | Quaternary | 11224 |
| 5 | Quinary | 3305 |
| 6 | Senary | 2306 |
| 7 | Septenary | 1567 |
| 8 | Octal | 1328 |
| 9 | Nonary | 1109 |
| 10 | Decimal | 90 |
| 12 | Duodecimal | 7612 |
| 16 | Hexadecimal | 5a16 |
| 20 | Vigesimal | 4a20 |
| 36 | Base36 | 2i36 |
| 60 | Sexagesimal | 1U60 |
Calculation was done in 0.0000159740 seconds
| Square of 90 (n2) | 8100 |
| Cube of 90 (n3) | 729000 |
| Square root of 90 | 9.4868329805051 |
| Natural Logarithm (ln) of 90 | 4.4998096703303 |
| Decimal Logarithm (log) of 90 | 1.9542425094393 |
Calculation was done in 0.0000038147 seconds
| Sine of 90 | 0.89399666360056 |
| Cosecant of 90 | 1.1185724071637 |
| Cosine of 90 | -0.44807361612917 |
| Secant of 90 | -2.2317761278578 |
| Tangent of 90 | -1.9952004122082 |
| Cotangent of 90 | -0.50120278338015 |
Calculation was done in 0.0000088215 seconds
Is 90 an Even Number?
Yes, the number 90 is an even number.
Previous even number is
88
Calculation was done in 0.0000040531 seconds
| The spelling of 90 in words is "ninety", meaning that: |
| 90 is an aban number (a number without the letter a) |
| 90 is not an eban number (as it contains the letter e) |
| 90 is not an iban number (as it contains the letter i) |
| 90 is an oban number (a number without the letter o) |
| 90 is not a tban number (as it contains the letter t) |
| 90 is an uban number (a number without the letter u) |
Calculation was done in 0.0000030994 seconds
| Bengali numerals | ৯০ |
| Eastern Arabic numerals | ٩٠ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓎎 |
| Khmer numerals | ៩០ |
| Japanese numerals | 九十 |
| Roman numerals | XC |
| Thai numerals | ๙๐ |
Calculation was done in 0.0000579357 seconds
| Arabic | تسعون |
| Croatian | devedeset |
| Czech | devadesát |
| Danish | halvfems |
| Dutch | negentig |
| Estonian | blaasieke |
| Faroese | níti |
| Filipino | siyám na pû |
| Finnish | yhdeksänkymmentä |
| French | quatre-vingt-dix |
| Greek | εννενήντα |
| German | neunzig |
| Hebrew | תשעים |
| Hindi | नब्बे |
| Hungarian | kilencven |
| Icelandic | níutíu |
| Indonesian | sembilan puluh |
| Italian | novanta |
| Japanese | 九十 |
| Korean | 구십 |
| Latvian | deviņdesmit |
| Lithuanian | devyniasdešimt |
| Norwegian | nitti |
| Persian | نود |
| Polish | dziewięćdziesiąt |
| Portuguese | noventa |
| Romanian | nouăzeci |
| Russian | девяносто |
| Serbian | деведесет |
| Slovak | deväťdesiat |
| Slovene | devetdeset |
| Spanish | noventa |
| Swahili | tisini |
| Swedish | nittio |
| Thai | เก้าสิบ |
| Turkish | doksan |
| Ukrainian | девʼяносто |
| Vietnamese | chín mươi |
Calculation was done in 0.0134270191 seconds
| Number 90 reversed | 09 |
| ASCII Code | 90 | Z |
| Unicode Character | U+005A | Z |
| Unix Timestamp | Thu, 01 Jan 1970 00:01:30 +0000 |
Calculation was done in 0.0000197887 seconds
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