3996986 has 16 divisors (see below), whose sum is σ = 7150464. Its totient is φ = 1638384.

The previous prime is 3996977. The next prime is 3997001. The reversal of 3996986 is 6896993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5885 + ... + 6528.

It is an arithmetic number, because the mean of its divisors is an integer number (446904).

Almost surely, 2^3996986 is an apocalyptic number.

3996986 is a deficient number, since it is larger than the sum of its proper divisors (3153478).

3996986 is a wasteful number, since it uses less digits than its factorization.

3996986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12445.

The product of its digits is 629856, while the sum is 50.

The square root of 3996986 is about 1999.2463580059. The cubic root of 3996986 is about 158.7002249555.

The spelling of 3996986 in words is "three million, nine hundred ninety-six thousand, nine hundred eighty-six".