91099936 has 12 divisors (see below), whose sum is σ = 179353062. Its totient is φ = 45549952.

The previous prime is 91099913. The next prime is 91099949. The reversal of 91099936 is 63999019.

It can be written as a sum of positive squares in only one way, i.e., 80209936 + 10890000 = 8956^2 + 3300^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1423405 + ... + 1423468.

Almost surely, 2^91099936 is an apocalyptic number.

It is an amenable number.

91099936 is a deficient number, since it is larger than the sum of its proper divisors (88253126).

91099936 is a wasteful number, since it uses less digits than its factorization.

91099936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846883 (or 2846875 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 46.

The square root of 91099936 is about 9544.6286465216. The cubic root of 91099936 is about 449.9587386036.

The spelling of 91099936 in words is "ninety-one million, ninety-nine thousand, nine hundred thirty-six".