91580794 has 4 divisors (see below), whose sum is σ = 137371194. Its totient is φ = 45790396.

The previous prime is 91580791. The next prime is 91580833. The reversal of 91580794 is 49708519.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 72335025 + 19245769 = 8505^2 + 4387^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 91580794.

It is not an unprimeable number, because it can be changed into a prime (91580791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22895197 + ... + 22895200.

Almost surely, 2^91580794 is an apocalyptic number.

91580794 is a deficient number, since it is larger than the sum of its proper divisors (45790400).

91580794 is a wasteful number, since it uses less digits than its factorization.

91580794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45790399.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 91580794 is about 9569.7854730396. The cubic root of 91580794 is about 450.7490307264.

The spelling of 91580794 in words is "ninety-one million, five hundred eighty thousand, seven hundred ninety-four".