3999788 has 12 divisors (see below), whose sum is σ = 7538160. Its totient is φ = 1846032.

The previous prime is 3999781. The next prime is 3999791. The reversal of 3999788 is 8879993.

3999788 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3999781) 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, 38408 + ... + 38511.

It is an arithmetic number, because the mean of its divisors is an integer number (628180).

Almost surely, 2^3999788 is an apocalyptic number.

It is an amenable number.

3999788 is a deficient number, since it is larger than the sum of its proper divisors (3538372).

3999788 is a wasteful number, since it uses less digits than its factorization.

3999788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76936 (or 76934 counting only the distinct ones).

The product of its digits is 979776, while the sum is 53.

The square root of 3999788 is about 1999.9469992977. The cubic root of 3999788 is about 158.7373007387.

The spelling of 3999788 in words is "three million, nine hundred ninety-nine thousand, seven hundred eighty-eight".