90890008 has 16 divisors (see below), whose sum is σ = 185911560. Its totient is φ = 41313600.

The previous prime is 90889999. The next prime is 90890021. The reversal of 90890008 is 80009809.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516333 + ... + 516508.

Almost surely, 2^90890008 is an apocalyptic number.

It is an amenable number.

90890008 is an abundant number, since it is smaller than the sum of its proper divisors (95021552).

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

90890008 is a wasteful number, since it uses less digits than its factorization.

90890008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032858 (or 1032854 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 90890008 is about 9533.6251237397. The cubic root of 90890008 is about 449.6128489086.

It can be divided in two parts, 90 and 890008, that added together give a palindrome (890098).

The spelling of 90890008 in words is "ninety million, eight hundred ninety thousand, eight".