3109905 has 12 divisors (see below), whose sum is σ = 5390580. Its totient is φ = 1658592.

The previous prime is 3109867. The next prime is 3109913. The reversal of 3109905 is 5099013.

3109905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1468944 + 1640961 = 1212^2 + 1281^2 .

It is not a de Polignac number, because 3109905 - 2⁸ = 3109649 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 34510 + ... + 34599.

It is an arithmetic number, because the mean of its divisors is an integer number (449215).

Almost surely, 2^3109905 is an apocalyptic number.

It is an amenable number.

3109905 is a deficient number, since it is larger than the sum of its proper divisors (2280675).

3109905 is a wasteful number, since it uses less digits than its factorization.

3109905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69120 (or 69117 counting only the distinct ones).

The product of its (nonzero) digits is 1215, while the sum is 27.

The square root of 3109905 is about 1763.4922738702. The cubic root of 3109905 is about 145.9651039387.

The spelling of 3109905 in words is "three million, one hundred nine thousand, nine hundred five".