3987321356 has 6 divisors (see below), whose sum is σ = 6977812380. Its totient is φ = 1993660676.

The previous prime is 3987321347. The next prime is 3987321379. The reversal of 3987321356 is 6531237893.

3987321356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3987321356.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498415166 + ... + 498415173.

It is an arithmetic number, because the mean of its divisors is an integer number (1162968730).

Almost surely, 2^3987321356 is an apocalyptic number.

It is an amenable number.

3987321356 is a deficient number, since it is larger than the sum of its proper divisors (2990491024).

3987321356 is a wasteful number, since it uses less digits than its factorization.

3987321356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996830343 (or 996830341 counting only the distinct ones).

The product of its digits is 816480, while the sum is 47.

The square root of 3987321356 is about 63145.2401689945. The cubic root of 3987321356 is about 1585.7221024145.

The spelling of 3987321356 in words is "three billion, nine hundred eighty-seven million, three hundred twenty-one thousand, three hundred fifty-six".