7979057279 has 4 divisors (see below), whose sum is σ = 8020832640. Its totient is φ = 7937281920.

The previous prime is 7979057263. The next prime is 7979057291. The reversal of 7979057279 is 9727509797.

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 7979057279 - 2⁴ = 7979057263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7979057249) 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, 20887394 + ... + 20887775.

It is an arithmetic number, because the mean of its divisors is an integer number (2005208160).

Almost surely, 2^7979057279 is an apocalyptic number.

7979057279 is a deficient number, since it is larger than the sum of its proper divisors (41775361).

7979057279 is a wasteful number, since it uses less digits than its factorization.

7979057279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41775360.

The product of its (nonzero) digits is 17503290, while the sum is 62.

The square root of 7979057279 is about 89325.5690102224. The cubic root of 7979057279 is about 1998.2532481231.

The spelling of 7979057279 in words is "seven billion, nine hundred seventy-nine million, fifty-seven thousand, two hundred seventy-nine".