Names of 990
| Nominal | 990 |
| Cardinal | nine hundred ninety |
| Ordinal | 990th |
| This number as US currency | nine hundred ninety dollars |
| Is 990 an odd number? | 990 is NOT an odd number |
| Is 990 an even number? | 990 is an even number |
| Is 990 a palindrome? | 990 is NOT a palindrome number |
| Is 990 a triangle number? | 990 is a triangle number |
990 in other Bases
| Base 2 (Binary) | 11110111102 |
| Base 3 (Ternary) | 11002003 |
| Base 4 (Quaternary) | 331324 |
| Base 5 (Quinary) | 124305 |
| Base 6 (Senary) | 43306 |
| Base 8 (Octal) | 17368 |
| Base 12 (Duodecimal) | 6A612 |
| Base 16 (Hexadecimal) | 3DE16 |
| Base 20 (Vigesimal) | 29A20 |
Primes and Factors tests for 990
| Is 990 a Prime Number? | 990 is NOT a prime |
| Is 990 a perfect number? | 990 is NOT a perfect number |
| Is 990 a Mersenne Prime? | 990 is NOT a Mersenne prime |
| Is 990 a Fermat Prime? | 990 is NOT a Fermat prime |
| Is 990 a Fibonacci Prime? | 990 is NOT a Fibonacci prime |
| Is 990 a Partition Prime? | 990 is NOT a Partition prime |
| Is 990 a Pell Prime? | 990 is NOT a Pell prime |
| Prime Factors | Prime factors of 990 |
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990 in other Numerals
| 990 in Roman Numeral | CMXC |
| 990 in Chinese Numeral | 玖佰玖拾 |
| 990 in Egyptian Numeral | 𓍪𓎎 |
| 990 in Babylonian Numeral |   |
Roots and stuff for 990
| Is 990 a square number? | 990 is NOT a square number |
| Is 990 a cube number? | 990 is NOT a cube number |
| Square root of the number 990 | 31.464265445105 |
| Cube root of the number 990 | 9.966554934126 |
Recreational math for 990
| Number 990 reversed | 099 |
| Sum of the digits | 18 |
| No of digits | 3 |