3987868 has 6 divisors (see below), whose sum is σ = 6978776. Its totient is φ = 1993932.

The previous prime is 3987859. The next prime is 3987887. The reversal of 3987868 is 8687893.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498480 + ... + 498487.

Almost surely, 2^3987868 is an apocalyptic number.

It is an amenable number.

3987868 is a deficient number, since it is larger than the sum of its proper divisors (2990908).

3987868 is a wasteful number, since it uses less digits than its factorization.

3987868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996971 (or 996969 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 3987868 is about 1996.9646967335. The cubic root of 3987868 is about 158.5794564249.

The spelling of 3987868 in words is "three million, nine hundred eighty-seven thousand, eight hundred sixty-eight".