90996831 has 8 divisors (see below), whose sum is σ = 134810160. Its totient is φ = 60664536.

The previous prime is 90996823. The next prime is 90996853. The reversal of 90996831 is 13869909.

It is not a de Polignac number, because 90996831 - 2³ = 90996823 is a prime.

It is a super-2 number, since 2×90996831² = 16560846504085122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90996931) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1685100 + ... + 1685153.

It is an arithmetic number, because the mean of its divisors is an integer number (16851270).

Almost surely, 2^90996831 is an apocalyptic number.

90996831 is a deficient number, since it is larger than the sum of its proper divisors (43813329).

90996831 is a wasteful number, since it uses less digits than its factorization.

90996831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370262 (or 3370256 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 90996831 is about 9539.2259119910. The cubic root of 90996831 is about 449.7889232301.

The spelling of 90996831 in words is "ninety million, nine hundred ninety-six thousand, eight hundred thirty-one".