3988940 has 12 divisors (see below), whose sum is σ = 8376816. Its totient is φ = 1595568.

The previous prime is 3988909. The next prime is 3988961. The reversal of 3988940 is 498893.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99704 + ... + 99743.

It is an arithmetic number, because the mean of its divisors is an integer number (698068).

Almost surely, 2^3988940 is an apocalyptic number.

It is an amenable number.

3988940 is an abundant number, since it is smaller than the sum of its proper divisors (4387876).

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

3988940 is a wasteful number, since it uses less digits than its factorization.

3988940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199456 (or 199454 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 3988940 is about 1997.2330860468. The cubic root of 3988940 is about 158.5936646808.

The spelling of 3988940 in words is "three million, nine hundred eighty-eight thousand, nine hundred forty".