It is a congruent number.
39936 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
239936 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 39936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57316).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
39936 is a wasteful number, since it uses less digits than its factorization.
39936 is an evil number, because the sum of its binary digits is even.
The square root of 39936 is about 199.8399359487. The cubic root of 39936 is about 34.1812694536.
The spelling of 39936 in words is "thirty-nine thousand, nine hundred thirty-six".