3939381443 has 16 divisors (see below), whose sum is σ = 4068092160. Its totient is φ = 3813186336.

The previous prime is 3939381437. The next prime is 3939381449. The reversal of 3939381443 is 3441839393.

3939381443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3939381437) and next prime (3939381449).

It is a cyclic number.

It is not a de Polignac number, because 3939381443 - 2¹² = 3939377347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3939381449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1090346 + ... + 1093952.

It is an arithmetic number, because the mean of its divisors is an integer number (254255760).

Almost surely, 2^3939381443 is an apocalyptic number.

3939381443 is a deficient number, since it is larger than the sum of its proper divisors (128710717).

3939381443 is a wasteful number, since it uses less digits than its factorization.

3939381443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946.

The product of its digits is 839808, while the sum is 47.

The square root of 3939381443 is about 62764.4918962944. The cubic root of 3939381443 is about 1579.3413698531.

The spelling of 3939381443 in words is "three billion, nine hundred thirty-nine million, three hundred eighty-one thousand, four hundred forty-three".