The number 9999 is a number composed of 4 different digits digits. Please find below how you can write 9999 in English.
Neuf mille neuf cent quatre-vingt-dix-neuf
Neuntausendneunhundertneunundneunzig
Negenduizendnegenhonderdnegenennegentig
Nueve mil novecientos noventa y nueve