The alphabets in the given words are coded as follows :
 

M	I	S	T	A	K	E	N	D
9	7	6	5	4	1	2	8	3

D is coded as 3,
I as 7,
S as 6,
T as 5,
A as 4  and
N as 8.
So, the code for DISTANT is 3765485.