990
Everything about the number 990 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 990
| Nominal | 990 |
| Cardinal | nine hundred ninety |
| Ordinal | 990th |
| This number as US currency | nine hundred ninety dollars |
Properties (and some facts) of 990
| 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 |
| Is 990 a triangle number? | 990 is a triangle number |
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990 in other bases
| Base 2 (Binary) | 1111011110 |
| Base 3 (Ternary) | 1100200 |
| Base 4 (Quaternary) | 33132 |
| Base 5 (Quinary) | 12430 |
| Base 6 (Senary) | 4330 |
| Base 8 (Octal) | 1736 |
| Base 12 (Duodecimal) | 6A6 |
| Base 16 (Hexadecimal) | 3DE |
| Base 20 (Vigesimal) | 29A |
Primes and factors tests for 990
| Is 990 a prime number? | 990 is not a prime number |
| 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 |
990 in other numeral systems
| 990 in Roman numerals | CMXC |
| 990 in Chinese numerals | 玖佰玖拾 |
| 990 in Babylonian numerals |   |
| 990 in Egyptian numerals | 𓍪𓎎 |
Roots and squares 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 990 | 31.464265445105 |
| Cube root of 990 | 9.966554934126 |
Recreational math for 990
| Number 990 reversed | 099 |
| Sum of the digits | 18 |
| Number of digits | 3 |
Arithmetic tables for 990
Other pages about 990
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