3978384 has 20 divisors (see below), whose sum is σ = 10277616. Its totient is φ = 1326112.

The previous prime is 3978349. The next prime is 3978421. The reversal of 3978384 is 4838793.

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, 41394 + ... + 41489.

Almost surely, 2^3978384 is an apocalyptic number.

It is an amenable number.

3978384 is an abundant number, since it is smaller than the sum of its proper divisors (6299232).

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

3978384 is a wasteful number, since it uses less digits than its factorization.

3978384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82894 (or 82888 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 3978384 is about 1994.5886794023. The cubic root of 3978384 is about 158.4536447218.

The spelling of 3978384 in words is "three million, nine hundred seventy-eight thousand, three hundred eighty-four".