89168931 has 10 divisors (see below), whose sum is σ = 133203092. Its totient is φ = 59445900.

The previous prime is 89168929. The next prime is 89168951. The reversal of 89168931 is 13986198.

It is not a de Polignac number, because 89168931 - 2¹ = 89168929 is a prime.

It is a super-2 number, since 2×89168931² = 15902196511365522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89168921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 550345 + ... + 550506.

Almost surely, 2^89168931 is an apocalyptic number.

89168931 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

89168931 is a deficient number, since it is larger than the sum of its proper divisors (44034161).

89168931 is a wasteful number, since it uses less digits than its factorization.

89168931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100863 (or 1100854 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 89168931 is about 9442.9302125982. The cubic root of 89168931 is about 446.7568156080.

The spelling of 89168931 in words is "eighty-nine million, one hundred sixty-eight thousand, nine hundred thirty-one".