3938143926 has 16 divisors (see below), whose sum is σ = 7896132144. Its totient is φ = 1309407264.

The previous prime is 3938143861. The next prime is 3938143967. The reversal of 3938143926 is 6293418393.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 824265 + ... + 829028.

It is an arithmetic number, because the mean of its divisors is an integer number (493508259).

Almost surely, 2^3938143926 is an apocalyptic number.

3938143926 is an abundant number, since it is smaller than the sum of its proper divisors (3957988218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3938143926 is a wasteful number, since it uses less digits than its factorization.

3938143926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653695.

The product of its digits is 839808, while the sum is 48.

The square root of 3938143926 is about 62754.6327054824. The cubic root of 3938143926 is about 1579.1759744718.

The spelling of 3938143926 in words is "three billion, nine hundred thirty-eight million, one hundred forty-three thousand, nine hundred twenty-six".