3808905 has 16 divisors (see below), whose sum is σ = 6123264. Its totient is φ = 2021760.

The previous prime is 3808853. The next prime is 3808907. The reversal of 3808905 is 5098083.

3808905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3808905 - 2⁶ = 3808841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3808907) 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 15 ways as a sum of consecutive naturals, for example, 3597 + ... + 4533.

It is an arithmetic number, because the mean of its divisors is an integer number (382704).

Almost surely, 2^3808905 is an apocalyptic number.

It is an amenable number.

3808905 is a deficient number, since it is larger than the sum of its proper divisors (2314359).

3808905 is a wasteful number, since it uses less digits than its factorization.

3808905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 3808905 is about 1951.6416166909. The cubic root of 3808905 is about 156.1708762058.

The spelling of 3808905 in words is "three million, eight hundred eight thousand, nine hundred five".