3986892 has 72 divisors (see below), whose sum is σ = 12413856. Its totient is φ = 1050624.

The previous prime is 3986839. The next prime is 3986897. The reversal of 3986892 is 2986893.

It is not an unprimeable number, because it can be changed into a prime (3986897) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 2668 + ... + 3884.

Almost surely, 2^3986892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3986892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6206928).

3986892 is an abundant number, since it is smaller than the sum of its proper divisors (8426964).

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

3986892 is a wasteful number, since it uses less digits than its factorization.

3986892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247 (or 1242 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 3986892 is about 1996.7203109099. The cubic root of 3986892 is about 158.5665183356.

Subtracting from 3986892 its reverse (2986893), we obtain a palindrome (999999).

The spelling of 3986892 in words is "three million, nine hundred eighty-six thousand, eight hundred ninety-two".