# Everything about 3

Discover a lot of information on the number 3: properties, mathematical operations, how to write it, symbolism, numerology, representations and many other interesting things!

## Numerology and symbolism of the number 3

The number 3 (three) is the symbol of the trinity. He also represents the union.

## The famous 3

- the 3 Musketeers - the 3 little pigs

## Mathematical properties of 3

Questions and answers |

Is 3 a prime number? |
Yes |

Is 3 a perfect number? |
No |

Number of divisors |
2 |

List of dividers |
1, 3 |

Sum of divisors |
4 |

## How to write / spell 3 in letters?

In letters, the number 3 is written as: Three. And in other languages? how does it spell?

3 in other languages |

Write 3 in english |
Three |

Write 3 in french |
Trois |

Write 3 in spanish |
Tres |

Write 3 in portuguese |
Três |

## Mathematical representations and links

Other ways to write 3 |

In letter |
Three |

In roman numeral |
III |

In binary |
11 |

In octal |
3 |

In hexadecimal |
3 |

In US dollars |
USD 3.00 ($) |

In euros |
3,00 EUR (€) |

Some related numbers |

Previous number |
2 |

Next number |
4 |

Next prime number |
5 |

## Mathematical operations

Operations and solutions |

3*2 |
= |
6 |
The double of 3 is 6 |

3*3 |
= |
9 |
The triple of 3 is 9 |

3/2 |
= |
1.5 |
The half of 3 is 1.500000 |

3/3 |
= |
1 |
The third of 3 is 1.000000 |

3^{2} |
= |
9 |
The square of 3 is 9.000000 |

3^{3} |
= |
27 |
The cube of 3 is 27.000000 |

√3 |
= |
1.7320508075689 |
The square root of 3 is 1.732051 |

log(3) |
= |
1.0986122886681 |
The natural (Neperian) logarithm of 3 is 1.098612 |

log10(3) |
= |
0.47712125471966 |
The decimal logarithm (base 10) of 3 is 0.477121 |

sin(3) |
= |
0.14112000805987 |
The sine of 3 is 0.141120 |

cos(3) |
= |
-0.98999249660045 |
The cosine of 3 is -0.989992 |

tan(3) |
= |
-0.14254654307428 |
The tangent of 3 is -0.142547 |