79291129 has 2 divisors, whose sum is σ = 79291130. Its totient is φ = 79291128.

The previous prime is 79291073. The next prime is 79291193. The reversal of 79291129 is 92119297.

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., 78801129 + 490000 = 8877^2 + 700^2 .

It is an emirp because it is prime and its reverse (92119297) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79291129 - 2²⁵ = 45736697 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 79291091 and 79291100.

It is not a weakly prime, because it can be changed into another prime (79291229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39645564 + 39645565.

It is an arithmetic number, because the mean of its divisors is an integer number (39645565).

Almost surely, 2^79291129 is an apocalyptic number.

It is an amenable number.

79291129 is a deficient number, since it is larger than the sum of its proper divisors (1).

79291129 is an equidigital number, since it uses as much as digits as its factorization.

79291129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20412, while the sum is 40.

The square root of 79291129 is about 8904.5566425286. The cubic root of 79291129 is about 429.6104801387.

The spelling of 79291129 in words is "seventy-nine million, two hundred ninety-one thousand, one hundred twenty-nine".