3986994 has 32 divisors (see below), whose sum is σ = 8771904. Its totient is φ = 1198080.

The previous prime is 3986989. The next prime is 3986999. The reversal of 3986994 is 4996893.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3986989) and next prime (3986999).

It is a super-2 number, since 2×3986994² = 31792242312072, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 12582 + ... + 12894.

It is an arithmetic number, because the mean of its divisors is an integer number (274122).

Almost surely, 2^3986994 is an apocalyptic number.

3986994 is an abundant number, since it is smaller than the sum of its proper divisors (4784910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3986994 is a wasteful number, since it uses less digits than its factorization.

3986994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522.

The product of its digits is 419904, while the sum is 48.

The square root of 3986994 is about 1996.7458526312. The cubic root of 3986994 is about 158.5678705707.

The spelling of 3986994 in words is "three million, nine hundred eighty-six thousand, nine hundred ninety-four".