# 3918421

## 3,918,421 is an odd composite number composed of three prime numbers multiplied together.

What does the number 3918421 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

3918421 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 3918421:

### 13 × 73 × 4129

See below for interesting mathematical facts about the number 3918421 from the Numbermatics database.

### Names of 3918421

• Cardinal: 3918421 can be written as Three million, nine hundred eighteen thousand, four hundred twenty-one.

### Scientific notation

• Scientific notation: 3.918421 × 106

### Factors of 3918421

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 4215

### Divisors of 3918421

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 4278680
• Sum of proper divisors (its aliquot sum) s(n): 360259
• 3918421 is a deficient number, because the sum of its proper divisors (360259) is less than itself. Its deficiency is 3558162

### Bases of 3918421

• Binary: 11101111001010010101012
• Base-36: 2BZH1

### Squares and roots of 3918421

• 3918421 squared (39184212) is 15354023133241
• 3918421 cubed (39184213) is 60163526679777332461
• The square root of 3918421 is 1979.5001894417
• The cube root of 3918421 is 157.6535296403

### Scales and comparisons

How big is 3918421?
• 3,918,421 seconds is equal to 6 weeks, 3 days, 8 hours, 27 minutes, 1 second.
• To count from 1 to 3,918,421 would take you about nine weeks!

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 3918421 cubic inches would be around 13.1 feet tall.

### Recreational maths with 3918421

• 3918421 backwards is 1248193
• The number of decimal digits it has is: 7
• The sum of 3918421's digits is 28
• More coming soon!