3998392 has 16 divisors (see below), whose sum is σ = 7565040. Its totient is φ = 1981056.

The previous prime is 3998377. The next prime is 3998399. The reversal of 3998392 is 2938993.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998399) 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, 1308 + ... + 3115.

It is an arithmetic number, because the mean of its divisors is an integer number (472815).

Almost surely, 2^3998392 is an apocalyptic number.

It is an amenable number.

3998392 is a deficient number, since it is larger than the sum of its proper divisors (3566648).

3998392 is a wasteful number, since it uses less digits than its factorization.

3998392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4542 (or 4538 counting only the distinct ones).

The product of its digits is 104976, while the sum is 43.

The square root of 3998392 is about 1999.5979595909. The cubic root of 3998392 is about 158.7188311717.

The spelling of 3998392 in words is "three million, nine hundred ninety-eight thousand, three hundred ninety-two".