3986996 has 12 divisors (see below), whose sum is σ = 7514052. Its totient is φ = 1840128.

The previous prime is 3986989. The next prime is 3986999. The reversal of 3986996 is 6996893.

It can be written as a sum of positive squares in 2 ways, for example, as 376996 + 3610000 = 614^2 + 1900^2 .

It is a super-2 number, since 2×3986996² = 31792274208032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38285 + ... + 38388.

It is an arithmetic number, because the mean of its divisors is an integer number (626171).

Almost surely, 2^3986996 is an apocalyptic number.

It is an amenable number.

3986996 is a deficient number, since it is larger than the sum of its proper divisors (3527056).

3986996 is a wasteful number, since it uses less digits than its factorization.

3986996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76690 (or 76688 counting only the distinct ones).

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

The square root of 3986996 is about 1996.7463534460. The cubic root of 3986996 is about 158.5678970849.

The spelling of 3986996 in words is "three million, nine hundred eighty-six thousand, nine hundred ninety-six".