91699492 has 6 divisors (see below), whose sum is σ = 160474118. Its totient is φ = 45849744.

The previous prime is 91699469. The next prime is 91699507. The reversal of 91699492 is 29499619.

It can be written as a sum of positive squares in only one way, i.e., 72829156 + 18870336 = 8534^2 + 4344^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11462433 + ... + 11462440.

Almost surely, 2^91699492 is an apocalyptic number.

It is an amenable number.

91699492 is a deficient number, since it is larger than the sum of its proper divisors (68774626).

91699492 is a wasteful number, since it uses less digits than its factorization.

91699492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22924877 (or 22924875 counting only the distinct ones).

The product of its digits is 314928, while the sum is 49.

The square root of 91699492 is about 9575.9851712500. The cubic root of 91699492 is about 450.9436854774.

The spelling of 91699492 in words is "ninety-one million, six hundred ninety-nine thousand, four hundred ninety-two".