3903906 has 16 divisors (see below), whose sum is σ = 7884864. Its totient is φ = 1288464.

The previous prime is 3903901. The next prime is 3903917. The reversal of 3903906 is 6093093.

3903906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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 in 7 ways as a sum of consecutive naturals, for example, 2541 + ... + 3776.

It is an arithmetic number, because the mean of its divisors is an integer number (492804).

Almost surely, 2^3903906 is an apocalyptic number.

3903906 is an abundant number, since it is smaller than the sum of its proper divisors (3980958).

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

3903906 is a wasteful number, since it uses less digits than its factorization.

3903906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6425.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 3903906 is about 1975.8304583137. The cubic root of 3903906 is about 157.4586235478.

Adding to 3903906 its reverse (6093093), we get a palindrome (9996999).

The spelling of 3903906 in words is "three million, nine hundred three thousand, nine hundred six".