79965247 has 2 divisors, whose sum is σ = 79965248. Its totient is φ = 79965246.

The previous prime is 79965233. The next prime is 79965269. The reversal of 79965247 is 74256997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79965247 - 2¹¹ = 79963199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79965247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79965217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39982623 + 39982624.

It is an arithmetic number, because the mean of its divisors is an integer number (39982624).

Almost surely, 2^79965247 is an apocalyptic number.

79965247 is a deficient number, since it is larger than the sum of its proper divisors (1).

79965247 is an equidigital number, since it uses as much as digits as its factorization.

79965247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 49.

The square root of 79965247 is about 8942.3289472039. The cubic root of 79965247 is about 430.8245347453.

The spelling of 79965247 in words is "seventy-nine million, nine hundred sixty-five thousand, two hundred forty-seven".