3978004 has 6 divisors (see below), whose sum is σ = 6961514. Its totient is φ = 1989000.

The previous prime is 3977999. The next prime is 3978031. The reversal of 3978004 is 4008793.

It is a happy number.

3978004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2160900 + 1817104 = 1470^2 + 1348^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497247 + ... + 497254.

Almost surely, 2^3978004 is an apocalyptic number.

It is an amenable number.

3978004 is a deficient number, since it is larger than the sum of its proper divisors (2983510).

3978004 is a wasteful number, since it uses less digits than its factorization.

3978004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994505 (or 994503 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 3978004 is about 1994.4934193925. The cubic root of 3978004 is about 158.4485995995.

The spelling of 3978004 in words is "three million, nine hundred seventy-eight thousand, four".