89638933 has 2 divisors, whose sum is σ = 89638934. Its totient is φ = 89638932.

The previous prime is 89638891. The next prime is 89638957. The reversal of 89638933 is 33983698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77757124 + 11881809 = 8818^2 + 3447^2 .

It is a cyclic number.

It is not a de Polignac number, because 89638933 - 2⁹ = 89638421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89638033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44819466 + 44819467.

It is an arithmetic number, because the mean of its divisors is an integer number (44819467).

Almost surely, 2^89638933 is an apocalyptic number.

It is an amenable number.

89638933 is a deficient number, since it is larger than the sum of its proper divisors (1).

89638933 is an equidigital number, since it uses as much as digits as its factorization.

89638933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 89638933 is about 9467.7839540201. The cubic root of 89638933 is about 447.5403798233.

The spelling of 89638933 in words is "eighty-nine million, six hundred thirty-eight thousand, nine hundred thirty-three".