3939684193684 has 12 divisors (see below), whose sum is σ = 6944771773044. Its totient is φ = 1955463687104.

The previous prime is 3939684193681. The next prime is 3939684193693. The reversal of 3939684193684 is 4863914869393.

3939684193684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1820394608400 + 2119289585284 = 1349220^2 + 1455778^2 .

It is a super-2 number, since 2×3939684193684² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3939684193681) 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, 3594601819 + ... + 3594602914.

It is an arithmetic number, because the mean of its divisors is an integer number (578730981087).

Almost surely, 2^{3939684193684} is an apocalyptic number.

It is an amenable number.

3939684193684 is a deficient number, since it is larger than the sum of its proper divisors (3005087579360).

3939684193684 is a wasteful number, since it uses less digits than its factorization.

3939684193684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7189204874 (or 7189204872 counting only the distinct ones).

The product of its digits is 725594112, while the sum is 73.

The spelling of 3939684193684 in words is "three trillion, nine hundred thirty-nine billion, six hundred eighty-four million, one hundred ninety-three thousand, six hundred eighty-four".