813679079 has 2 divisors, whose sum is σ = 813679080. Its totient is φ = 813679078.

The previous prime is 813679063. The next prime is 813679117. The reversal of 813679079 is 970976318.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 813679079 - 2⁴ = 813679063 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813679019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406839539 + 406839540.

It is an arithmetic number, because the mean of its divisors is an integer number (406839540).

Almost surely, 2^813679079 is an apocalyptic number.

813679079 is a deficient number, since it is larger than the sum of its proper divisors (1).

813679079 is an equidigital number, since it uses as much as digits as its factorization.

813679079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 813679079 is about 28525.0605433187. The cubic root of 813679079 is about 933.5789480146.

The spelling of 813679079 in words is "eight hundred thirteen million, six hundred seventy-nine thousand, seventy-nine".