90985692 has 48 divisors (see below), whose sum is σ = 243095552. Its totient is φ = 25945920.

The previous prime is 90985691. The next prime is 90985693. The reversal of 90985692 is 29658909.

It is an interprime number because it is at equal distance from previous prime (90985691) and next prime (90985693).

It is a super-2 number, since 2×90985692² = 16556792297437728, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90985691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82698 + ... + 83790.

Almost surely, 2^90985692 is an apocalyptic number.

It is an amenable number.

90985692 is an abundant number, since it is smaller than the sum of its proper divisors (152109860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90985692 is a wasteful number, since it uses less digits than its factorization.

90985692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098 (or 2096 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 90985692 is about 9538.6420417164. The cubic root of 90985692 is about 449.7705694655.

The spelling of 90985692 in words is "ninety million, nine hundred eighty-five thousand, six hundred ninety-two".