3989844 has 24 divisors (see below), whose sum is σ = 10344320. Its totient is φ = 1329912.

The previous prime is 3989837. The next prime is 3989857. The reversal of 3989844 is 4489893.

It is a happy number.

3989844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3989844.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18364 + ... + 18579.

Almost surely, 2^3989844 is an apocalyptic number.

It is an amenable number.

3989844 is an abundant number, since it is smaller than the sum of its proper divisors (6354476).

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

3989844 is a wasteful number, since it uses less digits than its factorization.

3989844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36956 (or 36948 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 3989844 is about 1997.4593863205. The cubic root of 3989844 is about 158.6056442914.

The spelling of 3989844 in words is "three million, nine hundred eighty-nine thousand, eight hundred forty-four".