509382 has 16 divisors (see below), whose sum is σ = 1132080. Its totient is φ = 169776.

The previous prime is 509363. The next prime is 509389. The reversal of 509382 is 283905.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509389) by changing a digit.

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, 4663 + ... + 4770.

It is an arithmetic number, because the mean of its divisors is an integer number (70755).

2⁵⁰⁹³⁸² is an apocalyptic number.

509382 is an abundant number, since it is smaller than the sum of its proper divisors (622698).

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

509382 is a wasteful number, since it uses less digits than its factorization.

509382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9444 (or 9438 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 509382 is about 713.7100251503. The cubic root of 509382 is about 79.8634127651.

The spelling of 509382 in words is "five hundred nine thousand, three hundred eighty-two".