91374772 has 6 divisors (see below), whose sum is σ = 159905858. Its totient is φ = 45687384.

The previous prime is 91374769. The next prime is 91374827. The reversal of 91374772 is 27747319.

It can be written as a sum of positive squares in only one way, i.e., 65221776 + 26152996 = 8076^2 + 5114^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11421843 + ... + 11421850.

Almost surely, 2^91374772 is an apocalyptic number.

It is an amenable number.

91374772 is a deficient number, since it is larger than the sum of its proper divisors (68531086).

91374772 is a wasteful number, since it uses less digits than its factorization.

91374772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22843697 (or 22843695 counting only the distinct ones).

The product of its digits is 74088, while the sum is 40.

The square root of 91374772 is about 9559.0152212453. The cubic root of 91374772 is about 450.4107722469.

The spelling of 91374772 in words is "ninety-one million, three hundred seventy-four thousand, seven hundred seventy-two".