79425589 has 2 divisors, whose sum is σ = 79425590. Its totient is φ = 79425588.

The previous prime is 79425587. The next prime is 79425607. The reversal of 79425589 is 98552497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43784689 + 35640900 = 6617^2 + 5970^2 .

It is a cyclic number.

It is not a de Polignac number, because 79425589 - 2¹ = 79425587 is a prime.

Together with 79425587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79425583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39712794 + 39712795.

It is an arithmetic number, because the mean of its divisors is an integer number (39712795).

Almost surely, 2^79425589 is an apocalyptic number.

It is an amenable number.

79425589 is a deficient number, since it is larger than the sum of its proper divisors (1).

79425589 is an equidigital number, since it uses as much as digits as its factorization.

79425589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 49.

The square root of 79425589 is about 8912.1035115174. The cubic root of 79425589 is about 429.8531840586.

It can be divided in two parts, 7942 and 5589, that added together give a palindrome (13531).

The spelling of 79425589 in words is "seventy-nine million, four hundred twenty-five thousand, five hundred eighty-nine".