509448 has 16 divisors (see below), whose sum is σ = 1273680. Its totient is φ = 169808.

The previous prime is 509441. The next prime is 509449. The reversal of 509448 is 844905.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 509448.

It is not an unprimeable number, because it can be changed into a prime (509441) by changing a digit.

509448 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 in 3 ways as a sum of consecutive naturals, for example, 10590 + ... + 10637.

It is an arithmetic number, because the mean of its divisors is an integer number (79605).

2⁵⁰⁹⁴⁴⁸ is an apocalyptic number.

It is an amenable number.

509448 is an abundant number, since it is smaller than the sum of its proper divisors (764232).

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

509448 is a wasteful number, since it uses less digits than its factorization.

509448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21236 (or 21232 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 509448 is about 713.7562609182. The cubic root of 509448 is about 79.8668618843.

The spelling of 509448 in words is "five hundred nine thousand, four hundred forty-eight".