Taiwan elementary school ACTIVITY

There is a unique 9 digit number $\overline{abcdefghi}$ in base 10 such that all digits are different, 0 isn't any digit, and the following 9 properties hold:

$\overline{a}$ is divisible by 1

$\overline{ab}$ is divisible by 2

$\overline{abc}$ is divisible by 3

$\overline{abcd}$ is divisible by 4

(And so on, until)

$\overline{abcdefghi}$ is divisible by 9

What is the number $\overline{abcdefghi}$ ?