89921933 has 2 divisors, whose sum is σ = 89921934. Its totient is φ = 89921932.

The previous prime is 89921921. The next prime is 89921941. The reversal of 89921933 is 33912998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71961289 + 17960644 = 8483^2 + 4238^2 .

It is a cyclic number.

It is not a de Polignac number, because 89921933 - 2⁸ = 89921677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89921983) 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, 44960966 + 44960967.

It is an arithmetic number, because the mean of its divisors is an integer number (44960967).

Almost surely, 2^89921933 is an apocalyptic number.

It is an amenable number.

89921933 is a deficient number, since it is larger than the sum of its proper divisors (1).

89921933 is an equidigital number, since it uses as much as digits as its factorization.

89921933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 44.

The square root of 89921933 is about 9482.7175957106. The cubic root of 89921933 is about 448.0108631640.

The spelling of 89921933 in words is "eighty-nine million, nine hundred twenty-one thousand, nine hundred thirty-three".