49
Everything about the number 49 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 49
| Nominal | 49 |
| Cardinal | forty-nine |
| Ordinal | 49th |
| This number as US currency | forty-nine dollars |
Properties (and some facts) of 49
| Is 49 an odd number? | 49 is an odd number |
| Is 49 an even number? | 49 is not an even number |
| Is 49 a palindrome? | 49 is not a palindrome |
| Is 49 a triangle number? | 49 is not a triangle number |
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49 in other bases
| Base 2 (Binary) | 110001 |
| Base 3 (Ternary) | 1211 |
| Base 4 (Quaternary) | 301 |
| Base 5 (Quinary) | 144 |
| Base 6 (Senary) | 121 |
| Base 8 (Octal) | 61 |
| Base 12 (Duodecimal) | 41 |
| Base 16 (Hexadecimal) | 31 |
| Base 20 (Vigesimal) | 29 |
Primes and factors tests for 49
| Is 49 a prime number? | 49 is not a prime number |
| Is 49 a perfect number? | 49 is not a perfect number |
| Is 49 a Mersenne prime? | 49 is not a Mersenne prime |
| Is 49 a Fermat prime? | 49 is not a Fermat prime |
| Is 49 a Fibonacci prime? | 49 is not a Fibonacci prime |
| Is 49 a partition prime? | 49 is not a partition prime |
| Is 49 a Pell prime? | 49 is not a Pell prime |
| Prime Factors | Prime factors of 49 |
49 in other numeral systems
| 49 in Roman numerals | XLIX |
| 49 in Chinese numerals | 肆拾玖 |
| 49 in Babylonian numerals |  |
| 49 in Egyptian numerals | 𓎉𓐂 |
Roots and squares for 49
| Is 49 a square number? | 49 is a square number |
| Is 49 a cube number? | 49 is not a cube number |
| Square root of 49 | 7 |
| Cube root of 49 | 3.659305710023 |
Recreational math for 49
| Number 49 reversed | 94 |
| Sum of the digits | 13 |
| Number of digits | 2 |
Arithmetic tables for 49
Other pages about 49
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