Names of 998
| Nominal | 998 |
| Cardinal | nine hundred ninety-eight |
| Ordinal | 998th |
| This number as US currency | nine hundred ninety-eight dollars |
| Is 998 an odd number? | 998 is NOT an odd number |
| Is 998 an even number? | 998 is an even number |
| Is 998 a palindrome? | 998 is NOT a palindrome number |
| Is 998 a triangle number? | 998 is NOT a triangle number |
998 in other Bases
| Base 2 (Binary) | 11111001102 |
| Base 3 (Ternary) | 11002223 |
| Base 4 (Quaternary) | 332124 |
| Base 5 (Quinary) | 124435 |
| Base 6 (Senary) | 43426 |
| Base 8 (Octal) | 17468 |
| Base 12 (Duodecimal) | 6B212 |
| Base 16 (Hexadecimal) | 3E616 |
| Base 20 (Vigesimal) | 29I20 |
Primes and Factors tests for 998
| Is 998 a Prime Number? | 998 is NOT a prime |
| Is 998 a perfect number? | 998 is NOT a perfect number |
| Is 998 a Mersenne Prime? | 998 is NOT a Mersenne prime |
| Is 998 a Fermat Prime? | 998 is NOT a Fermat prime |
| Is 998 a Fibonacci Prime? | 998 is NOT a Fibonacci prime |
| Is 998 a Partition Prime? | 998 is NOT a Partition prime |
| Is 998 a Pell Prime? | 998 is NOT a Pell prime |
| Prime Factors | Prime factors of 998 |
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998 in other Numerals
| 998 in Roman Numeral | CMXCVIII |
| 998 in Chinese Numeral | 玖佰玖拾捌 |
| 998 in Egyptian Numeral | 𓍪𓎎𓐁 |
| 998 in Babylonian Numeral |   |
Roots and stuff for 998
| Is 998 a square number? | 998 is NOT a square number |
| Is 998 a cube number? | 998 is NOT a cube number |
| Square root of the number 998 | 31.591137997863 |
| Cube root of the number 998 | 9.993328883944 |
Recreational math for 998
| Number 998 reversed | 899 |
| Sum of the digits | 26 |
| No of digits | 3 |