90320959 has 4 divisors (see below), whose sum is σ = 92762104. Its totient is φ = 87879816.

The previous prime is 90320953. The next prime is 90320999. The reversal of 90320959 is 95902309.

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 90320959 - 2¹⁹ = 89796671 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 2441107 = 90320959 / (9 + 0 + 3 + 2 + 0 + 9 + 5 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90320953) 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 3 ways as a sum of consecutive naturals, for example, 1220517 + ... + 1220590.

It is an arithmetic number, because the mean of its divisors is an integer number (23190526).

Almost surely, 2^90320959 is an apocalyptic number.

90320959 is a deficient number, since it is larger than the sum of its proper divisors (2441145).

90320959 is a wasteful number, since it uses less digits than its factorization.

90320959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441144.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 90320959 is about 9503.7339504008. The cubic root of 90320959 is about 448.6725638220.

The spelling of 90320959 in words is "ninety million, three hundred twenty thousand, nine hundred fifty-nine".