3878404 has 12 divisors (see below), whose sum is σ = 6801228. Its totient is φ = 1935200.

The previous prime is 3878401. The next prime is 3878423. The reversal of 3878404 is 4048783.

It can be written as a sum of positive squares in 2 ways, for example, as 2433600 + 1444804 = 1560^2 + 1202^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3878404.

It is not an unprimeable number, because it can be changed into a prime (3878401) 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, 2694 + ... + 3874.

It is an arithmetic number, because the mean of its divisors is an integer number (566769).

Almost surely, 2^3878404 is an apocalyptic number.

It is an amenable number.

3878404 is a deficient number, since it is larger than the sum of its proper divisors (2922824).

3878404 is a wasteful number, since it uses less digits than its factorization.

3878404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006 (or 2004 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 3878404 is about 1969.3663955699. The cubic root of 3878404 is about 157.1150116738.

The spelling of 3878404 in words is "three million, eight hundred seventy-eight thousand, four hundred four".