79579579 has 2 divisors, whose sum is σ = 79579580. Its totient is φ = 79579578.

The previous prime is 79579571. The next prime is 79579631. The reversal of 79579579 is 97597597.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (97597597) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79579579 - 2³ = 79579571 is a prime.

It is not a weakly prime, because it can be changed into another prime (79579571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39789789 + 39789790.

It is an arithmetic number, because the mean of its divisors is an integer number (39789790).

Almost surely, 2^79579579 is an apocalyptic number.

79579579 is a deficient number, since it is larger than the sum of its proper divisors (1).

79579579 is an equidigital number, since it uses as much as digits as its factorization.

79579579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6251175, while the sum is 58.

The square root of 79579579 is about 8920.7387025963. The cubic root of 79579579 is about 430.1308039054.

The spelling of 79579579 in words is "seventy-nine million, five hundred seventy-nine thousand, five hundred seventy-nine".