I am thinking of a $$5$$-digit number between $$40000$$ and $$50000$$.  The digit in the hundreds place has a value of $$800$$.  The digit in the ones place is the sum of all the factors of $$4$$.  The digit in the thousands place is $1$ more than the digit in the hundreds place.  The digit in the tens place is the difference between the digit in the hundreds place and the digit in the ones place.  What number am I thinking of?~\uline{~~~~~~~~~~}~ 
Overseas Competition->Knowledge Point->Number Theory Modules->Place Value and Number Bases->Numbers