509364 has 18 divisors (see below), whose sum is σ = 1287650. Its totient is φ = 169776.

The previous prime is 509363. The next prime is 509389. The reversal of 509364 is 463905.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 501264 + 8100 = 708^2 + 90^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 509364.

It is not an unprimeable number, because it can be changed into a prime (509363) 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 5 ways as a sum of consecutive naturals, for example, 7039 + ... + 7110.

2⁵⁰⁹³⁶⁴ is an apocalyptic number.

It is an amenable number.

509364 is an abundant number, since it is smaller than the sum of its proper divisors (778286).

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

509364 is a wasteful number, since it uses less digits than its factorization.

509364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14159 (or 14154 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 509364 is about 713.6974148755. The cubic root of 509364 is about 79.8624720446.

The spelling of 509364 in words is "five hundred nine thousand, three hundred sixty-four".