89101931 has 4 divisors (see below), whose sum is σ = 92975952. Its totient is φ = 85227912.

The previous prime is 89101927. The next prime is 89101933. The reversal of 89101931 is 13910198.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89101931 - 2² = 89101927 is a prime.

It is a super-2 number, since 2×89101931² = 15878308215857522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89101933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1936976 + ... + 1937021.

It is an arithmetic number, because the mean of its divisors is an integer number (23243988).

Almost surely, 2^89101931 is an apocalyptic number.

89101931 is a deficient number, since it is larger than the sum of its proper divisors (3874021).

89101931 is a wasteful number, since it uses less digits than its factorization.

89101931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3874020.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 89101931 is about 9439.3819183249. The cubic root of 89101931 is about 446.6448924437.

The spelling of 89101931 in words is "eighty-nine million, one hundred one thousand, nine hundred thirty-one".