3947392432 has 40 divisors (see below), whose sum is σ = 7838984384. Its totient is φ = 1924582464.

The previous prime is 3947392387. The next prime is 3947392433. The reversal of 3947392432 is 2342937493.

3947392432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3947392433) 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, 437923 + ... + 446845.

Almost surely, 2^3947392432 is an apocalyptic number.

It is an amenable number.

3947392432 is a deficient number, since it is larger than the sum of its proper divisors (3891591952).

3947392432 is a wasteful number, since it uses less digits than its factorization.

3947392432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9617 (or 9611 counting only the distinct ones).

The product of its digits is 979776, while the sum is 46.

The square root of 3947392432 is about 62828.2773279675. The cubic root of 3947392432 is about 1580.4112095322.

The spelling of 3947392432 in words is "three billion, nine hundred forty-seven million, three hundred ninety-two thousand, four hundred thirty-two".