Eighty nine
89 is an odd number.
89 is a prime number, which means it is only divisible by 1 and itself.
89 is a Sophie Germain prime, which means that 2 x 89 + 1 = 179 is also a prime number.
In binary, 89 is represented as 1011001.
In hex, 89 is represented as 59.
89 is the 11th Fibonacci number.
Prime factorization of 89: 89.