79795109 has 2 divisors, whose sum is σ = 79795110. Its totient is φ = 79795108.

The previous prime is 79795099. The next prime is 79795141. The reversal of 79795109 is 90159797.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71402500 + 8392609 = 8450^2 + 2897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79795109 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 (79791109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39897554 + 39897555.

It is an arithmetic number, because the mean of its divisors is an integer number (39897555).

Almost surely, 2^79795109 is an apocalyptic number.

It is an amenable number.

79795109 is a deficient number, since it is larger than the sum of its proper divisors (1).

79795109 is an equidigital number, since it uses as much as digits as its factorization.

79795109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 178605, while the sum is 47.

The square root of 79795109 is about 8932.8108118330. The cubic root of 79795109 is about 430.5187699525.

The spelling of 79795109 in words is "seventy-nine million, seven hundred ninety-five thousand, one hundred nine".