91880474 has 16 divisors (see below), whose sum is σ = 157802688. Its totient is φ = 39304032.

The previous prime is 91880471. The next prime is 91880479. The reversal of 91880474 is 47408819.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (91880471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2054 + ... + 13710.

It is an arithmetic number, because the mean of its divisors is an integer number (9862668).

Almost surely, 2^91880474 is an apocalyptic number.

91880474 is a deficient number, since it is larger than the sum of its proper divisors (65922214).

91880474 is a wasteful number, since it uses less digits than its factorization.

91880474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12229.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 91880474 is about 9585.4302981139. The cubic root of 91880474 is about 451.2401577031.

The spelling of 91880474 in words is "ninety-one million, eight hundred eighty thousand, four hundred seventy-four".