7979877927 has 48 divisors (see below), whose sum is σ = 13770465280. Its totient is φ = 4356892800.

The previous prime is 7979877923. The next prime is 7979877943. The reversal of 7979877927 is 7297789797.

It is a happy number.

It is not a de Polignac number, because 7979877927 - 2² = 7979877923 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 (7979877923) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128427 + ... + 180147.

Almost surely, 2^7979877927 is an apocalyptic number.

7979877927 is a deficient number, since it is larger than the sum of its proper divisors (5790587353).

7979877927 is a wasteful number, since it uses less digits than its factorization.

7979877927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51844 (or 51841 counting only the distinct ones).

The product of its digits is 196036848, while the sum is 72.

The square root of 7979877927 is about 89330.1624704668. The cubic root of 7979877927 is about 1998.3217527203.

The spelling of 7979877927 in words is "seven billion, nine hundred seventy-nine million, eight hundred seventy-seven thousand, nine hundred twenty-seven".