79026589 has 2 divisors, whose sum is σ = 79026590. Its totient is φ = 79026588.

The previous prime is 79026587. The next prime is 79026601. The reversal of 79026589 is 98562097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74476900 + 4549689 = 8630^2 + 2133^2 .

It is a cyclic number.

It is not a de Polignac number, because 79026589 - 2¹ = 79026587 is a prime.

Together with 79026587, 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 (79026587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39513294 + 39513295.

It is an arithmetic number, because the mean of its divisors is an integer number (39513295).

Almost surely, 2^79026589 is an apocalyptic number.

It is an amenable number.

79026589 is a deficient number, since it is larger than the sum of its proper divisors (1).

79026589 is an equidigital number, since it uses as much as digits as its factorization.

79026589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 79026589 is about 8889.6900395908. The cubic root of 79026589 is about 429.1321761874.

The spelling of 79026589 in words is "seventy-nine million, twenty-six thousand, five hundred eighty-nine".