Subtracting 3984 from its reverse (4893), we obtain a palindrome (909).
3984 is nontrivially palindromic in base 11.
3984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a nialpdrome in base 4, base 8 and base 16.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 3984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5208).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3984 is a wasteful number, since it uses less digits than its factorization.
3984 is an evil number, because the sum of its binary digits is even.
The square root of 3984 is about 63.1189353522. The cubic root of 3984 is about 15.8528168890.
The spelling of 3984 in words is "three thousand, nine hundred eighty-four".