Three Hundred and Nine


Root letters:


thalatha mia'atin wa tis'aan

309 is indirectly mentioned but referring to

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.