3998144 has 28 divisors (see below), whose sum is σ = 8001000. Its totient is φ = 1982208.

The previous prime is 3998131. The next prime is 3998171. The reversal of 3998144 is 4418993.

It is a junction number, because it is equal to n+sod(n) for n = 3998098 and 3998107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11282 + ... + 11630.

It is an arithmetic number, because the mean of its divisors is an integer number (285750).

Almost surely, 2^3998144 is an apocalyptic number.

It is an amenable number.

3998144 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

3998144 is a wasteful number, since it uses less digits than its factorization.

3998144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 530 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 3998144 is about 1999.5359461635. The cubic root of 3998144 is about 158.7155495956.

The spelling of 3998144 in words is "three million, nine hundred ninety-eight thousand, one hundred forty-four".