89131864 has 8 divisors (see below), whose sum is σ = 167122260. Its totient is φ = 44565928.

The previous prime is 89131859. The next prime is 89131871. The reversal of 89131864 is 46813198.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×89131864² = 15888978360228992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5570734 + ... + 5570749.

Almost surely, 2^89131864 is an apocalyptic number.

It is an amenable number.

89131864 is a deficient number, since it is larger than the sum of its proper divisors (77990396).

89131864 is a wasteful number, since it uses less digits than its factorization.

89131864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11141489 (or 11141485 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 89131864 is about 9440.9673233202. The cubic root of 89131864 is about 446.6949023016.

The spelling of 89131864 in words is "eighty-nine million, one hundred thirty-one thousand, eight hundred sixty-four".