There is a four digit number. The sum of the two numbers on the left is equal to the sum of the two numbers on the right. The sum of the two numbers in the middle is three times the sum of the two numbers next to it. The sum of the three numbers on the right is nine times that of the one on the left. Can you guess what the four digits are?

There is a four digit number. The sum of the two numbers on the left is equal to the sum of the two numbers on the right. The sum of the two numbers in the middle is three times the sum of the two numbers next to it. The sum of the three numbers on the right is nine times that of the one on the left. Can you guess what the four digits are?

two thousand eight hundred and seventy-three