3993231856 has 20 divisors (see below), whose sum is σ = 7783220592. Its totient is φ = 1984658816.

The previous prime is 3993231839. The next prime is 3993231857. The reversal of 3993231856 is 6581323993.

It is a happy number.

3993231856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3993231857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744565 + ... + 749908.

Almost surely, 2^3993231856 is an apocalyptic number.

It is an amenable number.

3993231856 is a deficient number, since it is larger than the sum of its proper divisors (3789988736).

3993231856 is a wasteful number, since it uses less digits than its factorization.

3993231856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494648 (or 1494642 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 49.

The square root of 3993231856 is about 63192.0236738783. The cubic root of 3993231856 is about 1586.5052332834.

The spelling of 3993231856 in words is "three billion, nine hundred ninety-three million, two hundred thirty-one thousand, eight hundred fifty-six".