3965944 has 16 divisors (see below), whose sum is σ = 7539120. Its totient is φ = 1955520.

The previous prime is 3965939. The next prime is 3965963. The reversal of 3965944 is 4495693.

It is a super-2 number, since 2×3965944² = 31457423622272, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3965897 and 3965906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2812 + ... + 3979.

It is an arithmetic number, because the mean of its divisors is an integer number (471195).

Almost surely, 2^3965944 is an apocalyptic number.

It is an amenable number.

3965944 is a deficient number, since it is larger than the sum of its proper divisors (3573176).

3965944 is a wasteful number, since it uses less digits than its factorization.

3965944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6870 (or 6866 counting only the distinct ones).

The product of its digits is 116640, while the sum is 40.

The square root of 3965944 is about 1991.4678003925. The cubic root of 3965944 is about 158.2883161647.

The spelling of 3965944 in words is "three million, nine hundred sixty-five thousand, nine hundred forty-four".