3899984 has 20 divisors (see below), whose sum is σ = 8243520. Its totient is φ = 1772640.

The previous prime is 3899983. The next prime is 3899989. The reversal of 3899984 is 4899983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899981) 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, 10904 + ... + 11255.

It is an arithmetic number, because the mean of its divisors is an integer number (412176).

Almost surely, 2^3899984 is an apocalyptic number.

It is an amenable number.

3899984 is an abundant number, since it is smaller than the sum of its proper divisors (4343536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3899984 is a wasteful number, since it uses less digits than its factorization.

3899984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22178 (or 22172 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 3899984 is about 1974.8377148515. The cubic root of 3899984 is about 157.4058764067.

Subtracting 3899984 from its reverse (4899983), we obtain a palindrome (999999).

The spelling of 3899984 in words is "three million, eight hundred ninety-nine thousand, nine hundred eighty-four".