509804369 has 8 divisors (see below), whose sum is σ = 530040000. Its totient is φ = 489745872.

The previous prime is 509804363. The next prime is 509804401. The reversal of 509804369 is 963408905.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-509804369 is a prime.

It is a super-2 number, since 2×509804369² = 519800989302976322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (509804363) 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, 38399 + ... + 49940.

It is an arithmetic number, because the mean of its divisors is an integer number (66255000).

Almost surely, 2^509804369 is an apocalyptic number.

It is an amenable number.

509804369 is a deficient number, since it is larger than the sum of its proper divisors (20235631).

509804369 is a wasteful number, since it uses less digits than its factorization.

509804369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88567.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 509804369 is about 22578.8478226857. The cubic root of 509804369 is about 798.8548036263.

The spelling of 509804369 in words is "five hundred nine million, eight hundred four thousand, three hundred sixty-nine".