91049764 has 27 divisors (see below), whose sum is σ = 173008017. Its totient is φ = 41908464.

The previous prime is 91049747. The next prime is 91049839. The reversal of 91049764 is 46794019.

It is a happy number.

The square root of 91049764 is 9542.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13468900 + 77580864 = 3670^2 + 8808^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 247909 + ... + 248275.

Almost surely, 2^91049764 is an apocalyptic number.

91049764 is the 9542-nd square number.

It is an amenable number.

91049764 is a deficient number, since it is larger than the sum of its proper divisors (81958253).

91049764 is a wasteful number, since it uses less digits than its factorization.

91049764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The cubic root of 91049764 is about 449.8761206332.

The spelling of 91049764 in words is "ninety-one million, forty-nine thousand, seven hundred sixty-four".