89979025 has 24 divisors (see below), whose sum is σ = 116956800. Its totient is φ = 68577600.

The previous prime is 89979023. The next prime is 89979047. The reversal of 89979025 is 52097998.

It is not a de Polignac number, because 89979025 - 2¹ = 89979023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89979025.

It is not an unprimeable number, because it can be changed into a prime (89979023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56490 + ... + 58060.

It is an arithmetic number, because the mean of its divisors is an integer number (4873200).

Almost surely, 2^89979025 is an apocalyptic number.

It is an amenable number.

89979025 is a deficient number, since it is larger than the sum of its proper divisors (26977775).

89979025 is a wasteful number, since it uses less digits than its factorization.

89979025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689 (or 1684 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 89979025 is about 9485.7274365227. The cubic root of 89979025 is about 448.1056580751.

The spelling of 89979025 in words is "eighty-nine million, nine hundred seventy-nine thousand, twenty-five".