Three Hundred and Nine

 

Root letters:

Tha-Lam-Tha


thalatha mia'atin wa tis'aan

309 is indirectly mentioned but referring to

18:25
وَلَبِثُوا فِي كَهْفِهِمْ ثَلاَثَ مِائَة ٍ سِنِينَ وَازْدَادُوا تِسْعا ً
Wa Labithū Fī Kahfihim Thalātha Miā'atin Sinīna Wa Azdādū Tis`āan 


And they remained in their cave for three hundred years, and increased by nine.