14440 has 24 divisors (see below), whose sum is σ = 34290. Its totient is φ = 5472.

The previous prime is 14437. The next prime is 14447. The reversal of 14440 is 4441.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12996 + 1444 = 114^2 + 38^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 14440.

It is not an unprimeable number, because it can be changed into a prime (14447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 751 + ... + 769.

2¹⁴⁴⁴⁰ is an apocalyptic number.

14440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17145).

14440 is an abundant number, since it is smaller than the sum of its proper divisors (19850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14440 is a wasteful number, since it uses less digits than its factorization.

14440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49 (or 26 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 14440 is about 120.1665510864. The cubic root of 14440 is about 24.3513138304.

Adding to 14440 its reverse (4441), we get a palindrome (18881).

Subtracting from 14440 its reverse (4441), we obtain a palindrome (9999).

It can be divided in two parts, 14 and 440, that added together give a palindrome (454).

The spelling of 14440 in words is "fourteen thousand, four hundred forty", and thus it is an iban number.