79675709 has 2 divisors, whose sum is σ = 79675710. Its totient is φ = 79675708.

The previous prime is 79675693. The next prime is 79675723. The reversal of 79675709 is 90757697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74822500 + 4853209 = 8650^2 + 2203^2 .

It is an emirp because it is prime and its reverse (90757697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79675709 - 2⁴ = 79675693 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79675009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39837854 + 39837855.

It is an arithmetic number, because the mean of its divisors is an integer number (39837855).

Almost surely, 2^79675709 is an apocalyptic number.

It is an amenable number.

79675709 is a deficient number, since it is larger than the sum of its proper divisors (1).

79675709 is an equidigital number, since it uses as much as digits as its factorization.

79675709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 833490, while the sum is 50.

The square root of 79675709 is about 8926.1250831478. The cubic root of 79675709 is about 430.3039297105.

The spelling of 79675709 in words is "seventy-nine million, six hundred seventy-five thousand, seven hundred nine".