29809 is integer part of π9 = 29809.09933..
It appears at the first occurrence of 314 within the π's decimal representation. Which is itself interesting because it creates a mirroring pattern, as it is preceded by 14:
…143142980919…
The sequence occupies characters 2125 through 2130 of π's decimal representation.
The sequence appears again with preceding four at 30915th character.
…8427362642980982340632…