90044879 has 4 divisors (see below), whose sum is σ = 90092184. Its totient is φ = 89997576.

The previous prime is 90044831. The next prime is 90044891. The reversal of 90044879 is 97844009.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90044879 - 2¹⁶ = 89979343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90044579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20672 + ... + 24645.

It is an arithmetic number, because the mean of its divisors is an integer number (22523046).

Almost surely, 2^90044879 is an apocalyptic number.

90044879 is a deficient number, since it is larger than the sum of its proper divisors (47305).

90044879 is a wasteful number, since it uses less digits than its factorization.

90044879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47304.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 90044879 is about 9489.1980166925. The cubic root of 90044879 is about 448.2149515234.

The spelling of 90044879 in words is "ninety million, forty-four thousand, eight hundred seventy-nine".