# What is a number divisible by 3 and 9?

Category:
religion and spirituality
astrology

Every

**number divisible**by**9**is**divisible by 3**. For example, 7425 is**divisible**by**9**, hence it is**divisible by 3**. 58302 is**divisible by 3**because the sum of its digits (5 + 8 +**3**+ 0 + 2) is**divisible by 3**. 69145 is not**divisible by 3**because the sum of its digits (6 +**9**+ 1 + 4 + 5) is not**divisible by 3**.

Just so, what are the divisibility rules for 3 and 9?

Let's summarize the **divisibility rules**: A number is **divisible** by **3** if the sum of its digits is **divisible** by **3**. A number is **divisible** by **9** if the sum of its digits is **divisible** by **9**. And a number is **divisible** by 6 if it is **divisible** by 2 (even number) and by **3**.

**Numbers**are

**divisible by 9**if the sum of all the individual digits is evenly

**divisible by 9**. For example, the last sum of the digits of the

**number**3627 is 18, which is evenly

**divisible by 9**so 3627 is evenly

**divisible by 9**.

Beside this, what are the numbers divisible by 3?

Rule: A **number** is **divisible by 3** if the sum of its digits is **divisible by 3**.

What is the **divisibility by 3** rule?

number | Explanation |
---|---|

12 | 1+2=3 and 3 is divisible by 3 |

36 | 3+6=9 and 9 is divisible by 3 |

102 | 1+0+2=3 and 3 is divisible by 3 |

The **Rule** for **3**: A number is divisible by **3** if the sum of the digits is divisible by **3**. What does this mean? This means that we need to add up the digits in the number and see of the answer is can be **divided by 3** without a remainder. Step 2: Determine if **3** divides evenly into the sum of 18.