3929071856 has 40 divisors (see below), whose sum is σ = 7687008000. Its totient is φ = 1945402560.

The previous prime is 3929071849. The next prime is 3929071859. The reversal of 3929071856 is 6581709293.

It is a super-2 number, since 2×3929071856² = 30875211299222569472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3929071859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956495 + ... + 960593.

It is an arithmetic number, because the mean of its divisors is an integer number (192175200).

Almost surely, 2^3929071856 is an apocalyptic number.

It is an amenable number.

3929071856 is a deficient number, since it is larger than the sum of its proper divisors (3757936144).

3929071856 is a wasteful number, since it uses less digits than its factorization.

3929071856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4677 (or 4671 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 3929071856 is about 62682.3089555578. The cubic root of 3929071856 is about 1577.9624239337.

The spelling of 3929071856 in words is "three billion, nine hundred twenty-nine million, seventy-one thousand, eight hundred fifty-six".