Adding to 5440 its reverse (445), we get a palindrome (5885).
5440 is an undulating number in base 13.
It is a nialpdrome in base 4 and base 10.
It is a zygodrome in base 4.
It is a self number, because there is not a number n which added to its sum of digits gives 5440.
It is a congruent number.
In principle, a polygon with 5440 sides can be constructed with ruler and compass.
25440 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 5440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6858).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
5440 is a wasteful number, since it uses less digits than its factorization.
5440 is an evil number, because the sum of its binary digits is even.
The square root of 5440 is about 73.7563556583. The cubic root of 5440 is about 17.5873186886.
The spelling of 5440 in words is "five thousand, four hundred forty".