89972631 has 12 divisors (see below), whose sum is σ = 148526352. Its totient is φ = 51412896.

The previous prime is 89972627. The next prime is 89972669. The reversal of 89972631 is 13627998.

89972631 is a `hidden beast` number, since 8 + 9 + 9 + 7 + 2 + 631 = 666.

It is not a de Polignac number, because 89972631 - 2² = 89972627 is a prime.

It is a super-2 number, since 2×89972631² = 16190148658124322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89972671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 714006 + ... + 714131.

It is an arithmetic number, because the mean of its divisors is an integer number (12377196).

Almost surely, 2^89972631 is an apocalyptic number.

89972631 is a deficient number, since it is larger than the sum of its proper divisors (58553721).

89972631 is a wasteful number, since it uses less digits than its factorization.

89972631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428150 (or 1428147 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 89972631 is about 9485.3903978698. The cubic root of 89972631 is about 448.0950435441.

It can be divided in two parts, 8997 and 2631, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 89972631 in words is "eighty-nine million, nine hundred seventy-two thousand, six hundred thirty-one".