91672844 has 12 divisors (see below), whose sum is σ = 160545000. Its totient is φ = 45802848.

The previous prime is 91672837. The next prime is 91672901. The reversal of 91672844 is 44827619.

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, 1649 + ... + 13640.

It is an arithmetic number, because the mean of its divisors is an integer number (13378750).

Almost surely, 2^91672844 is an apocalyptic number.

It is an amenable number.

91672844 is a deficient number, since it is larger than the sum of its proper divisors (68872156).

91672844 is a wasteful number, since it uses less digits than its factorization.

91672844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16792 (or 16790 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 91672844 is about 9574.5936728406. The cubic root of 91672844 is about 450.8999996245.

The spelling of 91672844 in words is "ninety-one million, six hundred seventy-two thousand, eight hundred forty-four".