It is a tau number, because it is divible by the number of its divisors (80).
It is a self number, because there is not a number n which added to its sum of digits gives 93840.
It is a congruent number.
It is an unprimeable number.
293840 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 93840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160704).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
93840 is a wasteful number, since it uses less digits than its factorization.
93840 is an evil number, because the sum of its binary digits is even.
The square root of 93840 is about 306.3331519767. Note that the first 3 decimals coincide. The cubic root of 93840 is about 45.4425471362.
The spelling of 93840 in words is "ninety-three thousand, eight hundred forty".