509424209 has 8 divisors (see below), whose sum is σ = 600979968. Its totient is φ = 422563680.

The previous prime is 509424197. The next prime is 509424229. The reversal of 509424209 is 902424905.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-509424209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509424229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1173572 + ... + 1174005.

It is an arithmetic number, because the mean of its divisors is an integer number (75122496).

Almost surely, 2^509424209 is an apocalyptic number.

It is an amenable number.

509424209 is a deficient number, since it is larger than the sum of its proper divisors (91555759).

509424209 is a wasteful number, since it uses less digits than its factorization.

509424209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347615.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 509424209 is about 22570.4277540325. The cubic root of 509424209 is about 798.6561861569.

The spelling of 509424209 in words is "five hundred nine million, four hundred twenty-four thousand, two hundred nine".