Cuatro Quince
Quince
quince - which sounds like 'keen-say'
quince dias
If you mean the time: las cuatro y cuarto If you mean simply the numbers: cuatro, quince.
Las nueve y cuarto.
It is 'quince' (pronounced 'KEENthay') ('th' as in 'thin')
To say "he is fifteen" in Spanish, you would say "él tiene quince años." Literally, this means "he has fifteen years." That may seem a little odd to English speakers, but that is how a person's age is described in Spanish.
One million six thousand fifteen in Spanish is "un millón seis mil quince."
fifteen thousand, four hundred nine.
cuatro
Fifteen thousand, four hundred nine.