3995844 has 12 divisors (see below), whose sum is σ = 9323664. Its totient is φ = 1331944.

The previous prime is 3995843. The next prime is 3995851. The reversal of 3995844 is 4485993.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 3995796 and 3995805.

It is not an unprimeable number, because it can be changed into a prime (3995843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166482 + ... + 166505.

It is an arithmetic number, because the mean of its divisors is an integer number (776972).

Almost surely, 2^3995844 is an apocalyptic number.

It is an amenable number.

3995844 is an abundant number, since it is smaller than the sum of its proper divisors (5327820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3995844 is a wasteful number, since it uses less digits than its factorization.

3995844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332994 (or 332992 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 3995844 is about 1998.9607299795. The cubic root of 3995844 is about 158.6851091557.

The spelling of 3995844 in words is "three million, nine hundred ninety-five thousand, eight hundred forty-four".