3939844 has 12 divisors (see below), whose sum is σ = 6978384. Its totient is φ = 1946024.

The previous prime is 3939841. The next prime is 3939851. The reversal of 3939844 is 4489393.

It is a junction number, because it is equal to n+sod(n) for n = 3939797 and 3939806.

It is not an unprimeable number, because it can be changed into a prime (3939841) 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, 5602 + ... + 6265.

It is an arithmetic number, because the mean of its divisors is an integer number (581532).

Almost surely, 2^3939844 is an apocalyptic number.

It is an amenable number.

3939844 is a deficient number, since it is larger than the sum of its proper divisors (3038540).

3939844 is a wasteful number, since it uses less digits than its factorization.

3939844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11954 (or 11952 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 3939844 is about 1984.9040279066. The cubic root of 3939844 is about 157.9403182164.

The spelling of 3939844 in words is "three million, nine hundred thirty-nine thousand, eight hundred forty-four".