3955905 has 16 divisors (see below), whose sum is σ = 7032960. Its totient is φ = 2109744.

The previous prime is 3955877. The next prime is 3955909. The reversal of 3955905 is 5095593.

3955905 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 3955905 - 2⁸ = 3955649 is a prime.

3955905 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3955905.

It is not an unprimeable number, because it can be changed into a prime (3955909) 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, 14517 + ... + 14786.

It is an arithmetic number, because the mean of its divisors is an integer number (439560).

Almost surely, 2^3955905 is an apocalyptic number.

It is an amenable number.

3955905 is a deficient number, since it is larger than the sum of its proper divisors (3077055).

3955905 is a wasteful number, since it uses less digits than its factorization.

3955905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29317 (or 29311 counting only the distinct ones).

The product of its (nonzero) digits is 30375, while the sum is 36.

The square root of 3955905 is about 1988.9457006163. The cubic root of 3955905 is about 158.1546448296.

The spelling of 3955905 in words is "three million, nine hundred fifty-five thousand, nine hundred five".