504440 has 16 divisors (see below), whose sum is σ = 1135080. Its totient is φ = 201760.

The previous prime is 504403. The next prime is 504457. The reversal of 504440 is 44405.

504440 = 170² + 171² + ... + 185².

It is an Ulam number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 6266 + ... + 6345.

2⁵⁰⁴⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

504440 is an abundant number, since it is smaller than the sum of its proper divisors (630640).

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

504440 is a wasteful number, since it uses less digits than its factorization.

504440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12622 (or 12618 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 504440 is about 710.2393962602. The cubic root of 504440 is about 79.6042959560.

Adding to 504440 its reverse (44405), we get a palindrome (548845).

The spelling of 504440 in words is "five hundred four thousand, four hundred forty".