950 years.
{And indeed, We sent Nuh (Noah) to his people, and he stayed among them a thousand years less fifty years [inviting them to believe in the Oneness of Allah (Monotheism), and discard the false gods and other deities], and the Deluge overtook them while they were Zalimun (wrong-doers, polytheists, disbelievers, etc.)}. [Al-Ankabut 29:14]
950 عاما
وَلَقَدْ أَرْسَلْنَا نُوحاً إِلَىٰ قَوْمِهِ فَلَبِثَ فِيهِمْ أَلْفَ سَنَةٍ إِلاَّ خَمْسِينَ عَاماً فَأَخَذَهُمُ ٱلطُّوفَانُ وَهُمْ ظَالِمُونَ ) العنكبوت [14:29)