79179387839 has 2 divisors, whose sum is σ = 79179387840. Its totient is φ = 79179387838.

The previous prime is 79179387823. The next prime is 79179387841. The reversal of 79179387839 is 93878397197.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79179387839 - 2⁴ = 79179387823 is a prime.

Together with 79179387841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79179387809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39589693919 + 39589693920.

It is an arithmetic number, because the mean of its divisors is an integer number (39589693920).

Almost surely, 2^79179387839 is an apocalyptic number.

79179387839 is a deficient number, since it is larger than the sum of its proper divisors (1).

79179387839 is an equidigital number, since it uses as much as digits as its factorization.

79179387839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144027072, while the sum is 71.

The spelling of 79179387839 in words is "seventy-nine billion, one hundred seventy-nine million, three hundred eighty-seven thousand, eight hundred thirty-nine".