3944156238 has 24 divisors (see below), whose sum is σ = 9322551576. Its totient is φ = 1195198800.

The previous prime is 3944156233. The next prime is 3944156267. The reversal of 3944156238 is 8326514493.

3944156238 is a `hidden beast` number, since 3 + 9 + 4 + 4 + 15 + 623 + 8 = 666.

3944156238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3944156193 and 3944156202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944156233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9959793 + ... + 9960188.

It is an arithmetic number, because the mean of its divisors is an integer number (388439649).

Almost surely, 2^3944156238 is an apocalyptic number.

3944156238 is an abundant number, since it is smaller than the sum of its proper divisors (5378395338).

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

3944156238 is a wasteful number, since it uses less digits than its factorization.

3944156238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19920000 (or 19919997 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 3944156238 is about 62802.5177680004. The cubic root of 3944156238 is about 1579.9792015101.

The spelling of 3944156238 in words is "three billion, nine hundred forty-four million, one hundred fifty-six thousand, two hundred thirty-eight".