3931214856 has 32 divisors (see below), whose sum is σ = 9915017760. Its totient is φ = 1298807552.

The previous prime is 3931214803. The next prime is 3931214879. The reversal of 3931214856 is 6584121393.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 722070 + ... + 727493.

It is an arithmetic number, because the mean of its divisors is an integer number (309844305).

Almost surely, 2^3931214856 is an apocalyptic number.

It is an amenable number.

3931214856 is an abundant number, since it is smaller than the sum of its proper divisors (5983802904).

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

3931214856 is a wasteful number, since it uses less digits than its factorization.

3931214856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449685 (or 1449681 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 3931214856 is about 62699.4007626867. The cubic root of 3931214856 is about 1578.2492566337.

The spelling of 3931214856 in words is "three billion, nine hundred thirty-one million, two hundred fourteen thousand, eight hundred fifty-six".