79824929 has 2 divisors, whose sum is σ = 79824930. Its totient is φ = 79824928.

The previous prime is 79824917. The next prime is 79824931. The reversal of 79824929 is 92942897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65934400 + 13890529 = 8120^2 + 3727^2 .

It is an emirp because it is prime and its reverse (92942897) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79824929 is a prime.

Together with 79824931, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79824959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39912464 + 39912465.

It is an arithmetic number, because the mean of its divisors is an integer number (39912465).

Almost surely, 2^79824929 is an apocalyptic number.

It is an amenable number.

79824929 is a deficient number, since it is larger than the sum of its proper divisors (1).

79824929 is an equidigital number, since it uses as much as digits as its factorization.

79824929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The square root of 79824929 is about 8934.4797834009. The cubic root of 79824929 is about 430.5723925826.

The spelling of 79824929 in words is "seventy-nine million, eight hundred twenty-four thousand, nine hundred twenty-nine".