79929271 has 2 divisors, whose sum is σ = 79929272. Its totient is φ = 79929270.

The previous prime is 79929259. The next prime is 79929329. The reversal of 79929271 is 17292997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79929271 - 2⁹ = 79928759 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 (79929571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39964635 + 39964636.

It is an arithmetic number, because the mean of its divisors is an integer number (39964636).

Almost surely, 2^79929271 is an apocalyptic number.

79929271 is a deficient number, since it is larger than the sum of its proper divisors (1).

79929271 is an equidigital number, since it uses as much as digits as its factorization.

79929271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 46.

The square root of 79929271 is about 8940.3171643964. The cubic root of 79929271 is about 430.7599163892.

It can be divided in two parts, 79929 and 271, that added together give a triangular number (80200 = T₄₀₀).

The spelling of 79929271 in words is "seventy-nine million, nine hundred twenty-nine thousand, two hundred seventy-one".