3989684 has 12 divisors (see below), whose sum is σ = 7027524. Its totient is φ = 1981824.

The previous prime is 3989683. The next prime is 3989701. The reversal of 3989684 is 4869893.

3989684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1493284 + 2496400 = 1222^2 + 1580^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989683) 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 in 3 ways as a sum of consecutive naturals, for example, 2549 + ... + 3804.

It is an arithmetic number, because the mean of its divisors is an integer number (585627).

Almost surely, 2^3989684 is an apocalyptic number.

It is an amenable number.

3989684 is a deficient number, since it is larger than the sum of its proper divisors (3037840).

3989684 is a wasteful number, since it uses less digits than its factorization.

3989684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6514 (or 6512 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 3989684 is about 1997.4193350421. The cubic root of 3989684 is about 158.6035241382.

The spelling of 3989684 in words is "three million, nine hundred eighty-nine thousand, six hundred eighty-four".