# 489

## 489 is an odd composite number composed of two prime numbers multiplied together.

What does the number 489 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

489 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 489:

### 3 × 163

See below for interesting mathematical facts about the number 489 from the Numbermatics database.

### Names of 489

• Cardinal: 489 can be written as Four hundred eighty-nine.

### Scientific notation

• Scientific notation: 4.89 × 102

### Factors of 489

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 166

### Divisors of 489

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 656
• Sum of proper divisors (its aliquot sum) s(n): 167
• 489 is a deficient number, because the sum of its proper divisors (167) is less than itself. Its deficiency is 322

### Bases of 489

• Binary: 1111010012
• Base-36: DL

### Squares and roots of 489

• 489 squared (4892) is 239121
• 489 cubed (4893) is 116930169
• The square root of 489 is 22.1133443875
• The cube root of 489 is 7.8783684255

### Scales and comparisons

How big is 489?
• 489 seconds is equal to 8 minutes, 9 seconds.
• To count from 1 to 489 would take you about four minutes.

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 489 cubic inches would be around 0.7 feet tall.

### Recreational maths with 489

• 489 backwards is 984
• The number of decimal digits it has is: 3
• The sum of 489's digits is 21
• More coming soon!