① 500,927 : five hundred thousand, nine hundred and twenty-seven
② 186,699 : one hundred and eighty-six thousand, six hundred and ninety-nine
③ 809,157 : eight hundred and nine thousand, one hundred and fifty-seven
④ 2,044,365 : two million, forty-four thousand, three hundred and sixty-five
这是正确的答案,有问题请追问、
希望及时采纳—— ♥ 多谢 ⌒_⌒