3903904 has 12 divisors (see below), whose sum is σ = 7685874. Its totient is φ = 1951936.

The previous prime is 3903901. The next prime is 3903917. The reversal of 3903904 is 4093093.

It can be written as a sum of positive squares in only one way, i.e., 2108304 + 1795600 = 1452^2 + 1340^2 .

It is not an unprimeable number, because it can be changed into a prime (3903901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60967 + ... + 61030.

Almost surely, 2^3903904 is an apocalyptic number.

It is an amenable number.

3903904 is a deficient number, since it is larger than the sum of its proper divisors (3781970).

3903904 is a wasteful number, since it uses less digits than its factorization.

3903904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122007 (or 121999 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 3903904 is about 1975.8299521973. The cubic root of 3903904 is about 157.4585966587.

Adding to 3903904 its reverse (4093093), we get a palindrome (7996997).

The spelling of 3903904 in words is "three million, nine hundred three thousand, nine hundred four".