3988624 has 20 divisors (see below), whose sum is σ = 7817580. Its totient is φ = 1971200.

The previous prime is 3988619. The next prime is 3988627. The reversal of 3988624 is 4268893.

3988624 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 1364224 + 2624400 = 1168^2 + 1620^2 .

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (3988627) 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, 24 + ... + 2824.

It is an arithmetic number, because the mean of its divisors is an integer number (390879).

Almost surely, 2^3988624 is an apocalyptic number.

It is an amenable number.

3988624 is a deficient number, since it is larger than the sum of its proper divisors (3828956).

3988624 is a wasteful number, since it uses less digits than its factorization.

3988624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898 (or 2892 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 3988624 is about 1997.1539750355. The cubic root of 3988624 is about 158.5894766909.

The spelling of 3988624 in words is "three million, nine hundred eighty-eight thousand, six hundred twenty-four".