Question

Check the divisibility of$406839by9.$

Answer 1

Understanding the tests of divisibility:

Divisibility by $9$ : A number is divisible by $9$, if sum of its digits is divisible by $9$.

Check the divisibility $406839$ by $9$.

Sum of digits of $406839=4+0+6+8+3+9=30$:

Since, $30$ is not divisible by $9$.

Therefore, $406839$ is not divisible by $9$.