3999524 has 12 divisors (see below), whose sum is σ = 7095564. Its totient is φ = 1972224.

The previous prime is 3999517. The next prime is 3999529. The reversal of 3999524 is 4259993.

It can be written as a sum of positive squares in 2 ways, for example, as 937024 + 3062500 = 968^2 + 1750^2 .

It is not an unprimeable number, because it can be changed into a prime (3999529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6557 + ... + 7140.

It is an arithmetic number, because the mean of its divisors is an integer number (591297).

Almost surely, 2^3999524 is an apocalyptic number.

It is an amenable number.

3999524 is a deficient number, since it is larger than the sum of its proper divisors (3096040).

3999524 is a wasteful number, since it uses less digits than its factorization.

3999524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13774 (or 13772 counting only the distinct ones).

The product of its digits is 87480, while the sum is 41.

The square root of 3999524 is about 1999.8809964595. The cubic root of 3999524 is about 158.7338082562.

The spelling of 3999524 in words is "three million, nine hundred ninety-nine thousand, five hundred twenty-four".