3968805 has 16 divisors (see below), whose sum is σ = 6522624. Its totient is φ = 2059200.

The previous prime is 3968801. The next prime is 3968807. The reversal of 3968805 is 5088693.

It is not a de Polignac number, because 3968805 - 2² = 3968801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3968801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3021 + ... + 4130.

It is an arithmetic number, because the mean of its divisors is an integer number (407664).

Almost surely, 2^3968805 is an apocalyptic number.

It is an amenable number.

3968805 is a deficient number, since it is larger than the sum of its proper divisors (2553819).

3968805 is a wasteful number, since it uses less digits than its factorization.

3968805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7196.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 3968805 is about 1992.1859852935. The cubic root of 3968805 is about 158.3263696537.

The spelling of 3968805 in words is "three million, nine hundred sixty-eight thousand, eight hundred five".