90199886 has 12 divisors (see below), whose sum is σ = 157389768. Its totient is φ = 38657052.

The previous prime is 90199871. The next prime is 90199913. The reversal of 90199886 is 68899109.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 460106 + ... + 460301.

It is an arithmetic number, because the mean of its divisors is an integer number (13115814).

Almost surely, 2^90199886 is an apocalyptic number.

90199886 is a deficient number, since it is larger than the sum of its proper divisors (67189882).

90199886 is a wasteful number, since it uses less digits than its factorization.

90199886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920423 (or 920416 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 50.

The square root of 90199886 is about 9497.3620548024. The cubic root of 90199886 is about 448.4719960376.

The spelling of 90199886 in words is "ninety million, one hundred ninety-nine thousand, eight hundred eighty-six".