3979398879 has 24 divisors (see below), whose sum is σ = 6296013360. Its totient is φ = 2410775808.

The previous prime is 3979398851. The next prime is 3979398887. The reversal of 3979398879 is 9788939793.

3979398879 is a `hidden beast` number, since 397 + 93 + 9 + 88 + 79 = 666.

It is not a de Polignac number, because 3979398879 - 2¹³ = 3979390687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979398809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 443997 + ... + 452870.

It is an arithmetic number, because the mean of its divisors is an integer number (262333890).

Almost surely, 2^3979398879 is an apocalyptic number.

3979398879 is a deficient number, since it is larger than the sum of its proper divisors (2316614481).

3979398879 is a wasteful number, since it uses less digits than its factorization.

3979398879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896919 (or 896916 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 72.

The square root of 3979398879 is about 63082.4767982361. The cubic root of 3979398879 is about 1584.6711732815.

The spelling of 3979398879 in words is "three billion, nine hundred seventy-nine million, three hundred ninety-eight thousand, eight hundred seventy-nine".