440144 has 10 divisors (see below), whose sum is σ = 852810. Its totient is φ = 220064.

The previous prime is 440131. The next prime is 440159. The reversal of 440144 is 441044.

It can be written as a sum of positive squares in only one way, i.e., 270400 + 169744 = 520^2 + 412^2 .

It is a congruent number.

It is an unprimeable number.

440144 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13739 + ... + 13770.

It is an arithmetic number, because the mean of its divisors is an integer number (85281).

2⁴⁴⁰¹⁴⁴ is an apocalyptic number.

It is an amenable number.

440144 is a deficient number, since it is larger than the sum of its proper divisors (412666).

440144 is a wasteful number, since it uses less digits than its factorization.

440144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27517 (or 27511 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 440144 is about 663.4334932757. The cubic root of 440144 is about 76.0673456611.

Adding to 440144 its reverse (441044), we get a palindrome (881188).

Subtracting 440144 from its reverse (441044), we obtain a square (900 = 30²).

The spelling of 440144 in words is "four hundred forty thousand, one hundred forty-four", and thus it is an iban number.