40009
Everything about the number 40009 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
Names of 40009
| Nominal | 40009 |
| Cardinal | forty thousand nine |
| Ordinal | 40,009th |
| This number as US currency | forty thousand nine dollars |
Properties (and some facts) of 40009
| Is 40009 an odd number? | 40009 is an odd number |
| Is 40009 an even number? | 40009 is not an even number |
| Is 40009 a palindrome? | 40009 is not a palindrome |
| Is 40009 a triangle number? | 40009 is not a triangle number |
40009 in other bases
| Base 2 (Binary) | 1001110001001001 |
| Base 3 (Ternary) | 2000212211 |
| Base 4 (Quaternary) | 21301021 |
| Base 5 (Quinary) | 2240014 |
| Base 6 (Senary) | 505121 |
| Base 8 (Octal) | 116111 |
| Base 12 (Duodecimal) | 1B1A1 |
| Base 16 (Hexadecimal) | 9C49 |
| Base 20 (Vigesimal) | 5009 |
Primes and factors tests for 40009
| Is 40009 a prime number? | 40009 is a prime number |
| Is 40009 a perfect number? | 40009 is not a perfect number |
| Is 40009 a Mersenne prime? | 40009 is not a Mersenne prime |
| Is 40009 a Fermat prime? | 40009 is not a Fermat prime |
| Is 40009 a Fibonacci prime? | 40009 is not a Fibonacci prime |
| Is 40009 a partition prime? | 40009 is not a partition prime |
| Is 40009 a Pell prime? | 40009 is not a Pell prime |
| Prime Factors | Prime factors of 40009 |
40009 in other numeral systems
| 40009 in Roman numerals | XLIX |
| 40009 in Chinese numerals | 肆萬玖 |
| 40009 in Babylonian numerals |    |
| 40009 in Egyptian numerals | 𓂰𓐂 |
Roots and squares for 40009
| Is 40009 a square number? | 40009 is not a square number |
| Is 40009 a cube number? | 40009 is not a cube number |
| Square root of 40009 | 200.02249873452 |
| Cube root of 40009 | 34.202083705106 |
Recreational math for 40009
| Number 40009 reversed | 90004 |
| Sum of the digits | 13 |
| Number of digits | 5 |