3990384 has 50 divisors (see below), whose sum is σ = 11553080. Its totient is φ = 1329696.

The previous prime is 3990383. The next prime is 3990419. The reversal of 3990384 is 4830993.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990383) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 244 + ... + 2835.

Almost surely, 2^3990384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3990384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5776540).

3990384 is an abundant number, since it is smaller than the sum of its proper divisors (7562696).

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

3990384 is a wasteful number, since it uses less digits than its factorization.

3990384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3099 (or 3084 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 3990384 is about 1997.5945534567. The cubic root of 3990384 is about 158.6127993902.

The spelling of 3990384 in words is "three million, nine hundred ninety thousand, three hundred eighty-four".