3967905 has 8 divisors (see below), whose sum is σ = 6348672. Its totient is φ = 2116208.

The previous prime is 3967877. The next prime is 3967913. The reversal of 3967905 is 5097693.

3967905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3967905 - 2⁶ = 3967841 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 7 ways as a sum of consecutive naturals, for example, 132249 + ... + 132278.

It is an arithmetic number, because the mean of its divisors is an integer number (793584).

Almost surely, 2^3967905 is an apocalyptic number.

It is an amenable number.

3967905 is a deficient number, since it is larger than the sum of its proper divisors (2380767).

3967905 is a wasteful number, since it uses less digits than its factorization.

3967905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264535.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 3967905 is about 1991.9600899616. The cubic root of 3967905 is about 158.3144009373.

The spelling of 3967905 in words is "three million, nine hundred sixty-seven thousand, nine hundred five".