404
Everything about the number 404 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 404
| Nominal | 404 |
| Cardinal | four hundred four |
| Ordinal | 404th |
| This number as US currency | four hundred four dollars |
Properties (and some facts) of 404
| Is 404 an odd number? | 404 is not an odd number |
| Is 404 an even number? | 404 is an even number |
| Is 404 a palindrome? | 404 is a palindrome |
| Is 404 a triangle number? | 404 is not a triangle number |
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404 in other bases
| Base 2 (Binary) | 110010100 |
| Base 3 (Ternary) | 112222 |
| Base 4 (Quaternary) | 12110 |
| Base 5 (Quinary) | 3104 |
| Base 6 (Senary) | 1512 |
| Base 8 (Octal) | 624 |
| Base 12 (Duodecimal) | 298 |
| Base 16 (Hexadecimal) | 194 |
| Base 20 (Vigesimal) | 104 |
Primes and factors tests for 404
| Is 404 a prime number? | 404 is not a prime number |
| Is 404 a perfect number? | 404 is not a perfect number |
| Is 404 a Mersenne prime? | 404 is not a Mersenne prime |
| Is 404 a Fermat prime? | 404 is not a Fermat prime |
| Is 404 a Fibonacci prime? | 404 is not a Fibonacci prime |
| Is 404 a partition prime? | 404 is not a partition prime |
| Is 404 a Pell prime? | 404 is not a Pell prime |
| Prime Factors | Prime factors of 404 |
404 in other numeral systems
| 404 in Roman numerals | CDIV |
| 404 in Chinese numerals | 肆佰肆 |
| 404 in Babylonian numerals |   |
| 404 in Egyptian numerals | 𓍥𓏽 |
Roots and squares for 404
| Is 404 a square number? | 404 is not a square number |
| Is 404 a cube number? | 404 is not a cube number |
| Square root of 404 | 20.099751242242 |
| Cube root of 404 | 7.3925417917137 |
Recreational math for 404
| Number 404 reversed | 404 |
| Sum of the digits | 8 |
| Number of digits | 3 |
Arithmetic tables for 404
Other pages about 404
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