79809607 has 2 divisors, whose sum is σ = 79809608. Its totient is φ = 79809606.

The previous prime is 79809589. The next prime is 79809617. The reversal of 79809607 is 70690897.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79809607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79809617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39904803 + 39904804.

It is an arithmetic number, because the mean of its divisors is an integer number (39904804).

Almost surely, 2^79809607 is an apocalyptic number.

79809607 is a deficient number, since it is larger than the sum of its proper divisors (1).

79809607 is an equidigital number, since it uses as much as digits as its factorization.

79809607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 79809607 is about 8933.6222776654. The cubic root of 79809607 is about 430.5448420733.

The spelling of 79809607 in words is "seventy-nine million, eight hundred nine thousand, six hundred seven".