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The Number 209: Properties and Meanings
Prime Factors of
209=
11x
19.
The
Chemical Element Bismuth has one
Stable Isotope. It has
209 neutrons.
209 is the largest stable neutron number.
North American area code 209 is a California telephone area code which covers Stockton, Merced, Manteca, Tracy, Modesto, Sonora, San Andreas, as well as parts of the Central Valley, the San Joaquin Valley, and the Sierra Foothills.

Ed
209 was the enforcement droid in the Robocop movie.
The Year 209 AD
In the year
209 AD in India, the reign of Chandashri, Satavahana king of the Andhra, began.
In the year
209 AD Publius Septimius Geta received the titles of Imperator and Augustus from his father, emperor Septimius Severus.