91923868 has 6 divisors (see below), whose sum is σ = 160866776. Its totient is φ = 45961932.

The previous prime is 91923857. The next prime is 91923899. The reversal of 91923868 is 86832919.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11490480 + ... + 11490487.

Almost surely, 2^91923868 is an apocalyptic number.

It is an amenable number.

91923868 is a deficient number, since it is larger than the sum of its proper divisors (68942908).

91923868 is a wasteful number, since it uses less digits than its factorization.

91923868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22980971 (or 22980969 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 91923868 is about 9587.6935704058. The cubic root of 91923868 is about 451.3111848855.

The spelling of 91923868 in words is "ninety-one million, nine hundred twenty-three thousand, eight hundred sixty-eight".