3999544 has 8 divisors (see below), whose sum is σ = 7499160. Its totient is φ = 1999768.

The previous prime is 3999529. The next prime is 3999547. The reversal of 3999544 is 4459993.

3999544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 3999544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999547) 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 as a sum of consecutive naturals, namely, 249964 + ... + 249979.

It is an arithmetic number, because the mean of its divisors is an integer number (937395).

Almost surely, 2^3999544 is an apocalyptic number.

It is an amenable number.

3999544 is a deficient number, since it is larger than the sum of its proper divisors (3499616).

3999544 is a wasteful number, since it uses less digits than its factorization.

3999544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499949 (or 499945 counting only the distinct ones).

The product of its digits is 174960, while the sum is 43.

The square root of 3999544 is about 1999.8859967508. The cubic root of 3999544 is about 158.7340728436.

The spelling of 3999544 in words is "three million, nine hundred ninety-nine thousand, five hundred forty-four".