3999982 has 16 divisors (see below), whose sum is σ = 7004160. Its totient is φ = 1677528.

The previous prime is 3999971. The next prime is 4000037. The reversal of 3999982 is 2899993.

3999982 is digitally balanced in base 8, because in such base it contains all the possibile digits an equal number of times.

3999982 is strictly pandigital in base 8.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2382 + ... + 3697.

It is an arithmetic number, because the mean of its divisors is an integer number (437760).

Almost surely, 2^3999982 is an apocalyptic number.

3999982 is a deficient number, since it is larger than the sum of its proper divisors (3004178).

3999982 is a wasteful number, since it uses less digits than its factorization.

3999982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6135.

The product of its digits is 314928, while the sum is 49.

The square root of 3999982 is about 1999.9954999949. The cubic root of 3999982 is about 158.7398670863.

The spelling of 3999982 in words is "three million, nine hundred ninety-nine thousand, nine hundred eighty-two".