3986900 has 18 divisors (see below), whose sum is σ = 8651790. Its totient is φ = 1594720.

The previous prime is 3986897. The next prime is 3986921. The reversal of 3986900 is 96893.

It can be written as a sum of positive squares in 3 ways, for example, as 315844 + 3671056 = 562^2 + 1916^2 .

It is a super-2 number, since 2×3986900² = 31790743220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 19835 + ... + 20034.

It is an arithmetic number, because the mean of its divisors is an integer number (480655).

Almost surely, 2^3986900 is an apocalyptic number.

It is an amenable number.

3986900 is an abundant number, since it is smaller than the sum of its proper divisors (4664890).

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

3986900 is a wasteful number, since it uses less digits than its factorization.

3986900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39883 (or 39876 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 3986900 is about 1996.7223141939. The cubic root of 3986900 is about 158.5666243940.

The spelling of 3986900 in words is "three million, nine hundred eighty-six thousand, nine hundred".