509244 has 12 divisors (see below), whose sum is σ = 1188264. Its totient is φ = 169744.

The previous prime is 509239. The next prime is 509263. The reversal of 509244 is 442905.

It is a tau number, because it is divible by the number of its divisors (12).

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, 21207 + ... + 21230.

It is an arithmetic number, because the mean of its divisors is an integer number (99022).

2⁵⁰⁹²⁴⁴ is an apocalyptic number.

It is an amenable number.

509244 is an abundant number, since it is smaller than the sum of its proper divisors (679020).

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

509244 is a wasteful number, since it uses less digits than its factorization.

509244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42444 (or 42442 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 509244 is about 713.6133406825. The cubic root of 509244 is about 79.8562000077.

The spelling of 509244 in words is "five hundred nine thousand, two hundred forty-four".