84
Everything about the number 84 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 84
| Nominal | 84 |
| Cardinal | eighty-four |
| Ordinal | 84th |
| This number as US currency | eighty-four dollars |
Properties (and some facts) of 84
| Is 84 an odd number? | 84 is not an odd number |
| Is 84 an even number? | 84 is an even number |
| Is 84 a palindrome? | 84 is not a palindrome |
| Is 84 a triangle number? | 84 is not a triangle number |
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84 in other bases
| Base 2 (Binary) | 1010100 |
| Base 3 (Ternary) | 10010 |
| Base 4 (Quaternary) | 1110 |
| Base 5 (Quinary) | 314 |
| Base 6 (Senary) | 220 |
| Base 8 (Octal) | 124 |
| Base 12 (Duodecimal) | 70 |
| Base 16 (Hexadecimal) | 54 |
| Base 20 (Vigesimal) | 44 |
Primes and factors tests for 84
| Is 84 a prime number? | 84 is not a prime number |
| Is 84 a perfect number? | 84 is not a perfect number |
| Is 84 a Mersenne prime? | 84 is not a Mersenne prime |
| Is 84 a Fermat prime? | 84 is not a Fermat prime |
| Is 84 a Fibonacci prime? | 84 is not a Fibonacci prime |
| Is 84 a partition prime? | 84 is not a partition prime |
| Is 84 a Pell prime? | 84 is not a Pell prime |
| Prime Factors | Prime factors of 84 |
84 in other numeral systems
| 84 in Roman numerals | LXXXIV |
| 84 in Chinese numerals | 捌拾肆 |
| 84 in Babylonian numerals |   |
| 84 in Egyptian numerals | 𓎍𓏽 |
Roots and squares for 84
| Is 84 a square number? | 84 is not a square number |
| Is 84 a cube number? | 84 is not a cube number |
| Square root of 84 | 9.1651513899117 |
| Cube root of 84 | 4.3795191398879 |
Recreational math for 84
| Number 84 reversed | 48 |
| Sum of the digits | 12 |
| Number of digits | 2 |
Arithmetic tables for 84
Other pages about 84
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