79904807429 has 2 divisors, whose sum is σ = 79904807430. Its totient is φ = 79904807428.

The previous prime is 79904807399. The next prime is 79904807431. The reversal of 79904807429 is 92470840997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40643366404 + 39261441025 = 201602^2 + 198145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79904807429 is a prime.

Together with 79904807431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79904800429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39952403714 + 39952403715.

It is an arithmetic number, because the mean of its divisors is an integer number (39952403715).

Almost surely, 2^79904807429 is an apocalyptic number.

It is an amenable number.

79904807429 is a deficient number, since it is larger than the sum of its proper divisors (1).

79904807429 is an equidigital number, since it uses as much as digits as its factorization.

79904807429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 79904807429 in words is "seventy-nine billion, nine hundred four million, eight hundred seven thousand, four hundred twenty-nine".