3978804 has 24 divisors (see below), whose sum is σ = 9511488. Its totient is φ = 1293760.

The previous prime is 3978803. The next prime is 3978811. The reversal of 3978804 is 4088793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3552 + ... + 4535.

It is an arithmetic number, because the mean of its divisors is an integer number (396312).

Almost surely, 2^3978804 is an apocalyptic number.

It is an amenable number.

3978804 is an abundant number, since it is smaller than the sum of its proper divisors (5532684).

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

3978804 is a wasteful number, since it uses less digits than its factorization.

3978804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8135 (or 8133 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 3978804 is about 1994.6939614888. The cubic root of 3978804 is about 158.4592205360.

The spelling of 3978804 in words is "three million, nine hundred seventy-eight thousand, eight hundred four".