3979889794 has 16 divisors (see below), whose sum is σ = 5994638208. Its totient is φ = 1981691712.

The previous prime is 3979889779. The next prime is 3979889827. The reversal of 3979889794 is 4979889793.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659539 + ... + 665545.

It is an arithmetic number, because the mean of its divisors is an integer number (374664888).

Almost surely, 2^3979889794 is an apocalyptic number.

3979889794 is a deficient number, since it is larger than the sum of its proper divisors (2014748414).

3979889794 is a wasteful number, since it uses less digits than its factorization.

3979889794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7329.

The product of its digits is 246903552, while the sum is 73.

The square root of 3979889794 is about 63086.3677350345. The cubic root of 3979889794 is about 1584.7363344516.

Subtracting 3979889794 from its reverse (4979889793), we obtain a palindrome (999999999).

The spelling of 3979889794 in words is "three billion, nine hundred seventy-nine million, eight hundred eighty-nine thousand, seven hundred ninety-four".