3995805 has 32 divisors (see below), whose sum is σ = 7106688. Its totient is φ = 1900800.

The previous prime is 3995791. The next prime is 3995837. The reversal of 3995805 is 5085993.

It is a de Polignac number, because none of the positive numbers 2^k-3995805 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9867 + ... + 10263.

It is an arithmetic number, because the mean of its divisors is an integer number (222084).

Almost surely, 2^3995805 is an apocalyptic number.

It is an amenable number.

3995805 is a deficient number, since it is larger than the sum of its proper divisors (3110883).

3995805 is a wasteful number, since it uses less digits than its factorization.

3995805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477.

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 3995805 is about 1998.9509748866. The cubic root of 3995805 is about 158.6845928910.

The spelling of 3995805 in words is "three million, nine hundred ninety-five thousand, eight hundred five".