3989744 has 20 divisors (see below), whose sum is σ = 8433240. Its totient is φ = 1813440.

The previous prime is 3989729. The next prime is 3989759. The reversal of 3989744 is 4479893.

3989744 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3989729) and next prime (3989759).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 3989695 and 3989704.

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 3 ways as a sum of consecutive naturals, for example, 11159 + ... + 11510.

It is an arithmetic number, because the mean of its divisors is an integer number (421662).

Almost surely, 2^3989744 is an apocalyptic number.

It is an amenable number.

3989744 is an abundant number, since it is smaller than the sum of its proper divisors (4443496).

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

3989744 is a wasteful number, since it uses less digits than its factorization.

3989744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22688 (or 22682 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 3989744 is about 1997.4343543656. The cubic root of 3989744 is about 158.6043192023.

The spelling of 3989744 in words is "three million, nine hundred eighty-nine thousand, seven hundred forty-four".