3987862 has 4 divisors (see below), whose sum is σ = 5981796. Its totient is φ = 1993930.

The previous prime is 3987859. The next prime is 3987887. The reversal of 3987862 is 2687893.

It is a semiprime because it is the product of two primes.

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, 996964 + ... + 996967.

It is an arithmetic number, because the mean of its divisors is an integer number (1495449).

Almost surely, 2^3987862 is an apocalyptic number.

3987862 is a deficient number, since it is larger than the sum of its proper divisors (1993934).

3987862 is a wasteful number, since it uses less digits than its factorization.

3987862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993933.

The product of its digits is 145152, while the sum is 43.

The square root of 3987862 is about 1996.9631944530. The cubic root of 3987862 is about 158.5793768939.

The spelling of 3987862 in words is "three million, nine hundred eighty-seven thousand, eight hundred sixty-two".