90791910 has 96 divisors (see below), whose sum is σ = 259223328. Its totient is φ = 21864960.

The previous prime is 90791891. The next prime is 90791923. The reversal of 90791910 is 1919709.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 289914 + ... + 290226.

It is an arithmetic number, because the mean of its divisors is an integer number (2700243).

Almost surely, 2^90791910 is an apocalyptic number.

90791910 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 90791910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129611664).

90791910 is an abundant number, since it is smaller than the sum of its proper divisors (168431418).

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

90791910 is a wasteful number, since it uses less digits than its factorization.

90791910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 36.

The square root of 90791910 is about 9528.4788922472. The cubic root of 90791910 is about 449.4510342797.

The spelling of 90791910 in words is "ninety million, seven hundred ninety-one thousand, nine hundred ten".