409
Everything about the number 409 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 409
| Nominal | 409 |
| Cardinal | four hundred nine |
| Ordinal | 409th |
| This number as US currency | four hundred nine dollars |
Properties (and some facts) of 409
| Is 409 an odd number? | 409 is an odd number |
| Is 409 an even number? | 409 is not an even number |
| Is 409 a palindrome? | 409 is not a palindrome |
| Is 409 a triangle number? | 409 is not a triangle number |
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409 in other bases
| Base 2 (Binary) | 110011001 |
| Base 3 (Ternary) | 120011 |
| Base 4 (Quaternary) | 12121 |
| Base 5 (Quinary) | 3114 |
| Base 6 (Senary) | 1521 |
| Base 8 (Octal) | 631 |
| Base 12 (Duodecimal) | 2A1 |
| Base 16 (Hexadecimal) | 199 |
| Base 20 (Vigesimal) | 109 |
Primes and factors tests for 409
| Is 409 a prime number? | 409 is a prime number |
| Is 409 a perfect number? | 409 is not a perfect number |
| Is 409 a Mersenne prime? | 409 is not a Mersenne prime |
| Is 409 a Fermat prime? | 409 is not a Fermat prime |
| Is 409 a Fibonacci prime? | 409 is not a Fibonacci prime |
| Is 409 a partition prime? | 409 is not a partition prime |
| Is 409 a Pell prime? | 409 is not a Pell prime |
| Prime Factors | Prime factors of 409 |
409 in other numeral systems
| 409 in Roman numerals | CDIX |
| 409 in Chinese numerals | 肆佰玖 |
| 409 in Babylonian numerals |   |
| 409 in Egyptian numerals | 𓍥𓐂 |
Roots and squares for 409
| Is 409 a square number? | 409 is not a square number |
| Is 409 a cube number? | 409 is not a cube number |
| Square root of 409 | 20.223748416157 |
| Cube root of 409 | 7.4229141204362 |
Recreational math for 409
| Number 409 reversed | 904 |
| Sum of the digits | 13 |
| Number of digits | 3 |
Arithmetic tables for 409
Other pages about 409
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