Il numero 509, cinquecentonove in Italiano, in Inglese si dice five hundred nine.
Il numero ordinale 509° in inglese si dice five hundred ninth.
500: five hundred
501: five hundred one
502: five hundred two
503: five hundred three
504: five hundred four
505: five hundred five
506: five hundred six
507: five hundred seven
508: five hundred eight
510: five hundred ten
511: five hundred eleven
512: five hundred twelve
513: five hundred thirteen
514: five hundred fourteen
515: five hundred fifteen
516: five hundred sixteen
517: five hundred seventeen
518: five hundred eighteen