90888004 has 18 divisors (see below), whose sum is σ = 162131690. Its totient is φ = 44581056.

The previous prime is 90887983. The next prime is 90888011. The reversal of 90888004 is 40088809.

It can be written as a sum of positive squares in 3 ways, for example, as 7128900 + 83759104 = 2670^2 + 9152^2 .

It is a super-2 number, since 2×90888004² = 16521258542208032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7192 + ... + 15280.

Almost surely, 2^90888004 is an apocalyptic number.

It is an amenable number.

90888004 is a deficient number, since it is larger than the sum of its proper divisors (71243686).

90888004 is a wasteful number, since it uses less digits than its factorization.

90888004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8199 (or 8144 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 90888004 is about 9533.5200214821. The cubic root of 90888004 is about 449.6095444355.

The spelling of 90888004 in words is "ninety million, eight hundred eighty-eight thousand, four".