CAT 2020 Quant Based LR — Previous Year Question

If in the number 9365714873, all the digits are arranged in increasing order from left to right in such a way that first prime numbers, then odd numbers, and last even numbers are arranged, then 2 is subtracted from the last four digits and 2 is added to the rest of the digits, and then 1 is subtracted from each of the digits, then how many digits remain at the same position in the new arrangement?