163839944 has 16 divisors (see below), whose sum is σ = 309444300. Its totient is φ = 81321472.

The previous prime is 163839941. The next prime is 163839967. The reversal of 163839944 is 449938361.

It is a happy number.

163839944 is digitally balanced in base 3, 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 159719044 + 4120900 = 12638^2 + 2030^2 .

It is not an unprimeable number, because it can be changed into a prime (163839941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73649 + ... + 75840.

Almost surely, 2^163839944 is an apocalyptic number.

It is an amenable number.

163839944 is a deficient number, since it is larger than the sum of its proper divisors (145604356).

163839944 is a wasteful number, since it uses less digits than its factorization.

163839944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149632 (or 149628 counting only the distinct ones).

The product of its digits is 559872, while the sum is 47.

The square root of 163839944 is about 12799.9978124998. The cubic root of 163839944 is about 547.1922405937.

The spelling of 163839944 in words is "one hundred sixty-three million, eight hundred thirty-nine thousand, nine hundred forty-four".