3959844938 has 12 divisors (see below), whose sum is σ = 6909525522. Its totient is φ = 1697076360.

The previous prime is 3959844937. The next prime is 3959844943. The reversal of 3959844938 is 8394489593.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2913516529 + 1046328409 = 53977^2 + 32347^2 .

It is not an unprimeable number, because it can be changed into a prime (3959844937) 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 5 ways as a sum of consecutive naturals, for example, 20203193 + ... + 20203388.

Almost surely, 2^3959844938 is an apocalyptic number.

3959844938 is a deficient number, since it is larger than the sum of its proper divisors (2949680584).

3959844938 is a wasteful number, since it uses less digits than its factorization.

3959844938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40406597 (or 40406590 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 62.

The square root of 3959844938 is about 62927.2988296812. The cubic root of 3959844938 is about 1582.0713283943.

The spelling of 3959844938 in words is "three billion, nine hundred fifty-nine million, eight hundred forty-four thousand, nine hundred thirty-eight".