Adding to 3440 its reverse (443), we get a palindrome (3883).
3440 is nontrivially palindromic in base 6.
3440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (20).
It is a plaindrome in base 14.
It is a nialpdrome in base 16.
It is a congruent number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 3440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4092).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3440 is a wasteful number, since it uses less digits than its factorization.
3440 is an evil number, because the sum of its binary digits is even.
The square root of 3440 is about 58.6515131945. The cubic root of 3440 is about 15.0956846286.
The spelling of 3440 in words is "three thousand, four hundred forty", and thus it is an iban number.