79797229 has 2 divisors, whose sum is σ = 79797230. Its totient is φ = 79797228.

The previous prime is 79797217. The next prime is 79797233. The reversal of 79797229 is 92279797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43917129 + 35880100 = 6627^2 + 5990^2 .

It is a cyclic number.

It is not a de Polignac number, because 79797229 - 2⁷ = 79797101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79797239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39898614 + 39898615.

It is an arithmetic number, because the mean of its divisors is an integer number (39898615).

Almost surely, 2^79797229 is an apocalyptic number.

It is an amenable number.

79797229 is a deficient number, since it is larger than the sum of its proper divisors (1).

79797229 is an equidigital number, since it uses as much as digits as its factorization.

79797229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1000188, while the sum is 52.

The square root of 79797229 is about 8932.9294747020. The cubic root of 79797229 is about 430.5225825994.

The spelling of 79797229 in words is "seventy-nine million, seven hundred ninety-seven thousand, two hundred twenty-nine".