79516901 has 2 divisors, whose sum is σ = 79516902. Its totient is φ = 79516900.

The previous prime is 79516841. The next prime is 79516937. The reversal of 79516901 is 10961597.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70576801 + 8940100 = 8401^2 + 2990^2 .

It is an emirp because it is prime and its reverse (10961597) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79516901 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 (79516981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39758450 + 39758451.

It is an arithmetic number, because the mean of its divisors is an integer number (39758451).

Almost surely, 2^79516901 is an apocalyptic number.

It is an amenable number.

79516901 is a deficient number, since it is larger than the sum of its proper divisors (1).

79516901 is an equidigital number, since it uses as much as digits as its factorization.

79516901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 79516901 is about 8917.2249607151. The cubic root of 79516901 is about 430.0178485470.

The spelling of 79516901 in words is "seventy-nine million, five hundred sixteen thousand, nine hundred one".