3995911 has 4 divisors (see below), whose sum is σ = 4017024. Its totient is φ = 3974800.

The previous prime is 3995903. The next prime is 3995921. The reversal of 3995911 is 1195993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3995911 - 2³ = 3995903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3995921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10270 + ... + 10651.

It is an arithmetic number, because the mean of its divisors is an integer number (1004256).

Almost surely, 2^3995911 is an apocalyptic number.

3995911 is a deficient number, since it is larger than the sum of its proper divisors (21113).

3995911 is a wasteful number, since it uses less digits than its factorization.

3995911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21112.

The product of its digits is 10935, while the sum is 37.

The square root of 3995911 is about 1998.9774886176. The cubic root of 3995911 is about 158.6859960641.

The spelling of 3995911 in words is "three million, nine hundred ninety-five thousand, nine hundred eleven".