79124947 has 4 divisors (see below), whose sum is σ = 86318136. Its totient is φ = 71931760.

The previous prime is 79124939. The next prime is 79124977. The reversal of 79124947 is 74942197.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79124947 - 2³ = 79124939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79124977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3596578 + ... + 3596599.

It is an arithmetic number, because the mean of its divisors is an integer number (21579534).

Almost surely, 2^79124947 is an apocalyptic number.

79124947 is a deficient number, since it is larger than the sum of its proper divisors (7193189).

79124947 is a wasteful number, since it uses less digits than its factorization.

79124947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7193188.

The product of its digits is 127008, while the sum is 43.

The square root of 79124947 is about 8895.2204582011. The cubic root of 79124947 is about 429.3101377402.

The spelling of 79124947 in words is "seventy-nine million, one hundred twenty-four thousand, nine hundred forty-seven".