89921968 has 20 divisors (see below), whose sum is σ = 174464280. Its totient is φ = 44898944.

The previous prime is 89921957. The next prime is 89921971. The reversal of 89921968 is 86912998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9471 + ... + 16417.

It is an arithmetic number, because the mean of its divisors is an integer number (8723214).

Almost surely, 2^89921968 is an apocalyptic number.

It is an amenable number.

89921968 is a deficient number, since it is larger than the sum of its proper divisors (84542312).

89921968 is a wasteful number, since it uses less digits than its factorization.

89921968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7764 (or 7758 counting only the distinct ones).

The product of its digits is 559872, while the sum is 52.

The square root of 89921968 is about 9482.7194411730. The cubic root of 89921968 is about 448.0109212899.

The spelling of 89921968 in words is "eighty-nine million, nine hundred twenty-one thousand, nine hundred sixty-eight".