3959939928 has 64 divisors (see below), whose sum is σ = 11499621120. Its totient is φ = 1112860800.

The previous prime is 3959939881. The next prime is 3959939947. The reversal of 3959939928 is 8299399593.

3959939928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3959939928² = 31362248466737290368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182958 + ... + 203453.

It is an arithmetic number, because the mean of its divisors is an integer number (179681580).

Almost surely, 2^3959939928 is an apocalyptic number.

It is an amenable number.

3959939928 is an abundant number, since it is smaller than the sum of its proper divisors (7539681192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3959939928 is a wasteful number, since it uses less digits than its factorization.

3959939928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386488 (or 386484 counting only the distinct ones).

The product of its digits is 42515280, while the sum is 66.

The square root of 3959939928 is about 62928.0535850268. The cubic root of 3959939928 is about 1582.0839787006.

The spelling of 3959939928 in words is "three billion, nine hundred fifty-nine million, nine hundred thirty-nine thousand, nine hundred twenty-eight".