91994576 has 10 divisors (see below), whose sum is σ = 178239522. Its totient is φ = 45997280.

The previous prime is 91994563. The next prime is 91994579. The reversal of 91994576 is 67549919.

It can be written as a sum of positive squares in only one way, i.e., 46566976 + 45427600 = 6824^2 + 6740^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91994579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2874815 + ... + 2874846.

Almost surely, 2^91994576 is an apocalyptic number.

It is an amenable number.

91994576 is a deficient number, since it is larger than the sum of its proper divisors (86244946).

91994576 is a wasteful number, since it uses less digits than its factorization.

91994576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5749669 (or 5749663 counting only the distinct ones).

The product of its digits is 612360, while the sum is 50.

The square root of 91994576 is about 9591.3802969124. The cubic root of 91994576 is about 451.4268716793.

The spelling of 91994576 in words is "ninety-one million, nine hundred ninety-four thousand, five hundred seventy-six".