91860488 has 16 divisors (see below), whose sum is σ = 172447980. Its totient is φ = 45874368.

The previous prime is 91860451. The next prime is 91860493. The reversal of 91860488 is 88406819.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 76352644 + 15507844 = 8738^2 + 3938^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470 + ... + 13562.

Almost surely, 2^91860488 is an apocalyptic number.

It is an amenable number.

91860488 is a deficient number, since it is larger than the sum of its proper divisors (80587492).

91860488 is a wasteful number, since it uses less digits than its factorization.

91860488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13976 (or 13972 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 91860488 is about 9584.3877217066. The cubic root of 91860488 is about 451.2074371500.

The spelling of 91860488 in words is "ninety-one million, eight hundred sixty thousand, four hundred eighty-eight".