Adding to 13950 its reverse (5931), we get a square (19881 = 1412).
It is a Curzon number.
It is a plaindrome in base 16.
It is a nialpdrome in base 11 and base 15.
It is a congruent number.
It is an unprimeable number.
13950 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
13950 is a Friedman number, since it can be written as 50*31*9, using all its digits and the basic arithmetic operations.
213950 is an apocalyptic number.
13950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
13950 is the 75-th heptagonal number.
It is a practical number, because each smaller number is the sum of distinct divisors of 13950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19344).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13950 is a wasteful number, since it uses less digits than its factorization.
13950 is an evil number, because the sum of its binary digits is even.
The square root of 13950 is about 118.1101181102. The cubic root of 13950 is about 24.0726962467.
The spelling of 13950 in words is "thirteen thousand, nine hundred fifty".