It is a nude number because it is divisible by every one of its digits.
It is a plaindrome in base 15.
It is an unprimeable number.
163944 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
163944 is a Friedman number, since it can be written as 414*396, using all its digits and the basic arithmetic operations.
2163944 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 163944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
163944 is a wasteful number, since it uses less digits than its factorization.
163944 is an odious number, because the sum of its binary digits is odd.
The square root of 163944 is about 404.8999876513. The cubic root of 163944 is about 54.7308058069.
The spelling of 163944 in words is "one hundred sixty-three thousand, nine hundred forty-four".