89922987 has 96 divisors (see below), whose sum is σ = 174666240. Its totient is φ = 45178560.

The previous prime is 89922983. The next prime is 89923007. The reversal of 89922987 is 78922998.

It is not a de Polignac number, because 89922987 - 2² = 89922983 is a prime.

It is a super-2 number, since 2×89922987² = 16172287182004338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89922983) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 538378 + ... + 538544.

It is an arithmetic number, because the mean of its divisors is an integer number (1819440).

Almost surely, 2^89922987 is an apocalyptic number.

89922987 is a deficient number, since it is larger than the sum of its proper divisors (84743253).

89922987 is a wasteful number, since it uses less digits than its factorization.

89922987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 225 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 89922987 is about 9482.7731703337. The cubic root of 89922987 is about 448.0126135771.

It can be divided in two parts, 89922 and 987, that added together give a palindrome (90909).

The spelling of 89922987 in words is "eighty-nine million, nine hundred twenty-two thousand, nine hundred eighty-seven".