3987968784 has 20 divisors (see below), whose sum is σ = 10302252816. Its totient is φ = 1329322912.

The previous prime is 3987968779. The next prime is 3987968813. The reversal of 3987968784 is 4878697893.

3987968784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41541294 + ... + 41541389.

Almost surely, 2^3987968784 is an apocalyptic number.

It is an amenable number.

3987968784 is an abundant number, since it is smaller than the sum of its proper divisors (6314284032).

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

3987968784 is a wasteful number, since it uses less digits than its factorization.

3987968784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83082694 (or 83082688 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 69.

The square root of 3987968784 is about 63150.3664597443. The cubic root of 3987968784 is about 1585.8079232147.

The spelling of 3987968784 in words is "three billion, nine hundred eighty-seven million, nine hundred sixty-eight thousand, seven hundred eighty-four".