91945392 has 80 divisors (see below), whose sum is σ = 296147712. Its totient is φ = 23880960.

The previous prime is 91945391. The next prime is 91945397. The reversal of 91945392 is 29354919.

It is a super-2 number, since 2×91945392² = 16907910220067328, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (91945391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8743 + ... + 16134.

Almost surely, 2^91945392 is an apocalyptic number.

It is an amenable number.

91945392 is an abundant number, since it is smaller than the sum of its proper divisors (204202320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91945392 is a wasteful number, since it uses less digits than its factorization.

91945392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24906 (or 24900 counting only the distinct ones).

The product of its digits is 87480, while the sum is 42.

The square root of 91945392 is about 9588.8159853029. The cubic root of 91945392 is about 451.3464070176.

The spelling of 91945392 in words is "ninety-one million, nine hundred forty-five thousand, three hundred ninety-two".