The word a hundred is spelled a hundred. This is a simply spelling question.
I would spell 400,600 as four hundred thousand and six hundred
a hundred
The value 400, 600 is four hundred thousand, six hundred.
We could spell it thirty-six hundred or three thousand, six hundred.
You spell it like this, three-hundred and eight.
It is spell one hundred and ten.
One hundred thousand and eight hundred
Two hundred.
four-hundred and ninety eight
You spell it like "two hundred forty nine".
Hundred dollars, or one hundred dollars
One-hundred-sixteen