90992859 has 16 divisors (see below), whose sum is σ = 124451712. Its totient is φ = 59105088.

The previous prime is 90992849. The next prime is 90992917. The reversal of 90992859 is 95829909.

It is not a de Polignac number, because 90992859 - 2⁵ = 90992827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90992849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82399 + ... + 83495.

It is an arithmetic number, because the mean of its divisors is an integer number (7778232).

Almost surely, 2^90992859 is an apocalyptic number.

90992859 is a deficient number, since it is larger than the sum of its proper divisors (33458853).

90992859 is a wasteful number, since it uses less digits than its factorization.

90992859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786.

The product of its (nonzero) digits is 524880, while the sum is 51.

The square root of 90992859 is about 9539.0177167253. The cubic root of 90992859 is about 449.7823787253.

The spelling of 90992859 in words is "ninety million, nine hundred ninety-two thousand, eight hundred fifty-nine".