440140 has 24 divisors (see below), whose sum is σ = 942480. Its totient is φ = 172608.

The previous prime is 440131. The next prime is 440159. The reversal of 440140 is 41044.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 440140.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 994 + ... + 1366.

It is an arithmetic number, because the mean of its divisors is an integer number (39270).

2⁴⁴⁰¹⁴⁰ is an apocalyptic number.

It is an amenable number.

440140 is an abundant number, since it is smaller than the sum of its proper divisors (502340).

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

440140 is a wasteful number, since it uses less digits than its factorization.

440140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

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

The square root of 440140 is about 663.4304786487. The cubic root of 440140 is about 76.0671152287.

Adding to 440140 its reverse (41044), we get a palindrome (481184).

The spelling of 440140 in words is "four hundred forty thousand, one hundred forty", and thus it is an iban number.