3992868 has 48 divisors (see below), whose sum is σ = 11296320. Its totient is φ = 1209600.

The previous prime is 3992843. The next prime is 3992873. The reversal of 3992868 is 8682993.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 493 + ... + 2868.

It is an arithmetic number, because the mean of its divisors is an integer number (235340).

Almost surely, 2^3992868 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 3992868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5648160).

3992868 is an abundant number, since it is smaller than the sum of its proper divisors (7303452).

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

3992868 is a wasteful number, since it uses less digits than its factorization.

3992868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385 (or 3377 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 3992868 is about 1998.2162045184. The cubic root of 3992868 is about 158.6457045333.

The spelling of 3992868 in words is "three million, nine hundred ninety-two thousand, eight hundred sixty-eight".