90599593 has 4 divisors (see below), whose sum is σ = 103542400. Its totient is φ = 77656788.

The previous prime is 90599573. The next prime is 90599603. The reversal of 90599593 is 39599509.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39599509 = 37 ⋅1070257.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90599593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90599573) 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, 6471393 + ... + 6471406.

It is an arithmetic number, because the mean of its divisors is an integer number (25885600).

Almost surely, 2^90599593 is an apocalyptic number.

It is an amenable number.

90599593 is a deficient number, since it is larger than the sum of its proper divisors (12942807).

90599593 is a wasteful number, since it uses less digits than its factorization.

90599593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12942806.

The product of its (nonzero) digits is 492075, while the sum is 49.

The square root of 90599593 is about 9518.3818477722. The cubic root of 90599593 is about 449.1334649525.

The spelling of 90599593 in words is "ninety million, five hundred ninety-nine thousand, five hundred ninety-three".