90491244 has 24 divisors (see below), whose sum is σ = 211485120. Its totient is φ = 30115344.

The previous prime is 90491239. The next prime is 90491251. The reversal of 90491244 is 44219409.

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 7 ways as a sum of consecutive naturals, for example, 2187 + ... + 13629.

It is an arithmetic number, because the mean of its divisors is an integer number (8811880).

Almost surely, 2^90491244 is an apocalyptic number.

It is an amenable number.

90491244 is an abundant number, since it is smaller than the sum of its proper divisors (120993876).

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

90491244 is a wasteful number, since it uses less digits than its factorization.

90491244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12109 (or 12107 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 90491244 is about 9512.6885789455. The cubic root of 90491244 is about 448.9543523980.

The spelling of 90491244 in words is "ninety million, four hundred ninety-one thousand, two hundred forty-four".