91994632 has 8 divisors (see below), whose sum is σ = 172489950. Its totient is φ = 45997312.

The previous prime is 91994603. The next prime is 91994647. The reversal of 91994632 is 23649919.

It can be written as a sum of positive squares in only one way, i.e., 91278916 + 715716 = 9554^2 + 846^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5749657 + ... + 5749672.

Almost surely, 2^91994632 is an apocalyptic number.

It is an amenable number.

91994632 is a deficient number, since it is larger than the sum of its proper divisors (80495318).

91994632 is a wasteful number, since it uses less digits than its factorization.

91994632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11499335 (or 11499331 counting only the distinct ones).

The product of its digits is 104976, while the sum is 43.

The square root of 91994632 is about 9591.3832161998. The cubic root of 91994632 is about 451.4269632785.

It can be divided in two parts, 9199 and 4632, that added together give a palindrome (13831).

The spelling of 91994632 in words is "ninety-one million, nine hundred ninety-four thousand, six hundred thirty-two".