440143 has 4 divisors (see below), whose sum is σ = 480168. Its totient is φ = 400120.

The previous prime is 440131. The next prime is 440159. The reversal of 440143 is 341044.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 440143 - 2⁹ = 439631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19996 + ... + 20017.

It is an arithmetic number, because the mean of its divisors is an integer number (120042).

2⁴⁴⁰¹⁴³ is an apocalyptic number.

440143 is a deficient number, since it is larger than the sum of its proper divisors (40025).

440143 is a wasteful number, since it uses less digits than its factorization.

440143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40024.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 440143 is about 663.4327396202. The cubic root of 440143 is about 76.0672880531.

Adding to 440143 its reverse (341044), we get a palindrome (781187).

Subtracting from 440143 its reverse (341044), we obtain a palindrome (99099).

It can be divided in two parts, 4401 and 43, that added together give a palindrome (4444).

The spelling of 440143 in words is "four hundred forty thousand, one hundred forty-three", and thus it is an iban number.