79247929 has 2 divisors, whose sum is σ = 79247930. Its totient is φ = 79247928.

The previous prime is 79247911. The next prime is 79247939. The reversal of 79247929 is 92974297.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78943225 + 304704 = 8885^2 + 552^2 .

It is a cyclic number.

It is not a de Polignac number, because 79247929 - 2²⁵ = 45693497 is a prime.

It is not a weakly prime, because it can be changed into another prime (79247939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39623964 + 39623965.

It is an arithmetic number, because the mean of its divisors is an integer number (39623965).

Almost surely, 2^79247929 is an apocalyptic number.

It is an amenable number.

79247929 is a deficient number, since it is larger than the sum of its proper divisors (1).

79247929 is an equidigital number, since it uses as much as digits as its factorization.

79247929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 49.

The square root of 79247929 is about 8902.1305876739. The cubic root of 79247929 is about 429.5324447413.

The spelling of 79247929 in words is "seventy-nine million, two hundred forty-seven thousand, nine hundred twenty-nine".