3856904 has 16 divisors (see below), whose sum is σ = 7314300. Its totient is φ = 1906432.

The previous prime is 3856903. The next prime is 3856907. The reversal of 3856904 is 4096583.

It can be written as a sum of positive squares in 2 ways, for example, as 3232804 + 624100 = 1798^2 + 790^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856903) 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, 1997 + ... + 3420.

Almost surely, 2^3856904 is an apocalyptic number.

It is an amenable number.

3856904 is a deficient number, since it is larger than the sum of its proper divisors (3457396).

3856904 is a wasteful number, since it uses less digits than its factorization.

3856904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5512 (or 5508 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 3856904 is about 1963.9002011304. The cubic root of 3856904 is about 156.8241502785.

The spelling of 3856904 in words is "three million, eight hundred fifty-six thousand, nine hundred four".