3990768 has 40 divisors (see below), whose sum is σ = 10463616. Its totient is φ = 1310400.

The previous prime is 3990761. The next prime is 3990773. The reversal of 3990768 is 8670993.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3990761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2823 + ... + 3993.

Almost surely, 2^3990768 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 3990768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5231808).

3990768 is an abundant number, since it is smaller than the sum of its proper divisors (6472848).

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

3990768 is a wasteful number, since it uses less digits than its factorization.

3990768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 3990768 is about 1997.6906667450. The cubic root of 3990768 is about 158.6178870678.

The spelling of 3990768 in words is "three million, nine hundred ninety thousand, seven hundred sixty-eight".