3986992 has 10 divisors (see below), whose sum is σ = 7724828. Its totient is φ = 1993488.

The previous prime is 3986989. The next prime is 3986999. The reversal of 3986992 is 2996893.

It is a happy number.

3986992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3986992² = 31792210416128, 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124578 + ... + 124609.

Almost surely, 2^3986992 is an apocalyptic number.

It is an amenable number.

3986992 is a deficient number, since it is larger than the sum of its proper divisors (3737836).

3986992 is a wasteful number, since it uses less digits than its factorization.

3986992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249195 (or 249189 counting only the distinct ones).

The product of its digits is 209952, while the sum is 46.

The square root of 3986992 is about 1996.7453518163. The cubic root of 3986992 is about 158.5678440565.

Subtracting from 3986992 its reverse (2996893), we obtain a palindrome (990099).

The spelling of 3986992 in words is "three million, nine hundred eighty-six thousand, nine hundred ninety-two".