90118984 has 32 divisors (see below), whose sum is σ = 178698240. Its totient is φ = 42537600.

The previous prime is 90118981. The next prime is 90119009. The reversal of 90118984 is 48981109.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (90118981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5737 + ... + 14599.

It is an arithmetic number, because the mean of its divisors is an integer number (5584320).

Almost surely, 2^90118984 is an apocalyptic number.

It is an amenable number.

90118984 is a deficient number, since it is larger than the sum of its proper divisors (88579256).

90118984 is a wasteful number, since it uses less digits than its factorization.

90118984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8941 (or 8937 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 90118984 is about 9493.1019166551. The cubic root of 90118984 is about 448.3378748989.

The spelling of 90118984 in words is "ninety million, one hundred eighteen thousand, nine hundred eighty-four".