79599589 has 2 divisors, whose sum is σ = 79599590. Its totient is φ = 79599588.

The previous prime is 79599563. The next prime is 79599613. The reversal of 79599589 is 98599597.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63075364 + 16524225 = 7942^2 + 4065^2 .

It is a cyclic number.

It is not a de Polignac number, because 79599589 - 2²¹ = 77502437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79599089) by changing a digit.

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 as a sum of consecutive naturals, namely, 39799794 + 39799795.

It is an arithmetic number, because the mean of its divisors is an integer number (39799795).

Almost surely, 2^79599589 is an apocalyptic number.

It is an amenable number.

79599589 is a deficient number, since it is larger than the sum of its proper divisors (1).

79599589 is an equidigital number, since it uses as much as digits as its factorization.

79599589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9185400, while the sum is 61.

The square root of 79599589 is about 8921.8601759947. The cubic root of 79599589 is about 430.1668525006.

The spelling of 79599589 in words is "seventy-nine million, five hundred ninety-nine thousand, five hundred eighty-nine".