Everything I have read says the Egyptians invented the number system about 3000 BC. I did not find the Hindus mentioned anywhere.
The number system we use in the west was invented by the Hindus and adopted by the Arabs. The West adopted it from the Arabs.
In Christian Europe, the first mention and representation of Hindu-Arabic numerals (from one to nine, without zero), is in the Codex Vigilanus, an illuminated compilation of various historical documents from the Visigothic period in Spain, written in the year 976 by three monks of the Riojan monastery of San Martín de Albelda....
Leonardo Fibonacci brought this system to Europe. His book Liber Abaci introduced Arabic numerals, the use of zero, and the decimal place system to the Latin world. The numeral system came to be called "Arabic" by the Europeans. It was used in European mathematics from the 12th century, and entered common use from the 15th century...You can read more at Hindu–Arabic numeral system at Wikipedia.