91475992 has 16 divisors (see below), whose sum is σ = 171725400. Its totient is φ = 45682560.

The previous prime is 91475987. The next prime is 91476001. The reversal of 91475992 is 29957419.

It is a happy number.

It is a super-2 number, since 2×91475992² = 16735714224768128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559 + ... + 13537.

Almost surely, 2^91475992 is an apocalyptic number.

It is an amenable number.

91475992 is a deficient number, since it is larger than the sum of its proper divisors (80249408).

91475992 is a wasteful number, since it uses less digits than its factorization.

91475992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13866 (or 13862 counting only the distinct ones).

The product of its digits is 204120, while the sum is 46.

The square root of 91475992 is about 9564.3082342635. The cubic root of 91475992 is about 450.5770243880.

The spelling of 91475992 in words is "ninety-one million, four hundred seventy-five thousand, nine hundred ninety-two".