90818408 has 16 divisors (see below), whose sum is σ = 174245280. Its totient is φ = 44353008.

The previous prime is 90818407. The next prime is 90818411. The reversal of 90818408 is 80481809.

It is not an unprimeable number, because it can be changed into a prime (90818407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131660 + ... + 132347.

It is an arithmetic number, because the mean of its divisors is an integer number (10890330).

Almost surely, 2^90818408 is an apocalyptic number.

It is an amenable number.

90818408 is a deficient number, since it is larger than the sum of its proper divisors (83426872).

90818408 is a wasteful number, since it uses less digits than its factorization.

90818408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264056 (or 264052 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 90818408 is about 9529.8692540874. The cubic root of 90818408 is about 449.4947547502.

The spelling of 90818408 in words is "ninety million, eight hundred eighteen thousand, four hundred eight".