509009469 has 8 divisors (see below), whose sum is σ = 679125312. Its totient is φ = 339116640.

The previous prime is 509009443. The next prime is 509009477. The reversal of 509009469 is 964900905.

It is a happy number.

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

It is not a de Polignac number, because 509009469 - 2⁸ = 509009213 is a prime.

It is a super-2 number, since 2×509009469² = 518181279063323922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 509009469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509009569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50352 + ... + 59609.

It is an arithmetic number, because the mean of its divisors is an integer number (84890664).

Almost surely, 2^509009469 is an apocalyptic number.

It is an amenable number.

509009469 is a deficient number, since it is larger than the sum of its proper divisors (170115843).

509009469 is a wasteful number, since it uses less digits than its factorization.

509009469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111507.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 509009469 is about 22561.2381974040. The cubic root of 509009469 is about 798.4393893685.

The spelling of 509009469 in words is "five hundred nine million, nine thousand, four hundred sixty-nine".