The Number

9990

Nine Thousand Nine Hundred and Ninety

In Base 18 Octodecimal Is

1cf018

The numbers with a 18 subscript use Base 18 Octodecimal notation.

For more familiar numbers: See Nine Thousand Nine Hundred and Ninety in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

9987
1cef18
Nine Thousand Nine Hundred and Eighty-Seven in Base 18 Octodecimal
9988
1ceg18
Nine Thousand Nine Hundred and Eighty-Eight in Base 18 Octodecimal
9989
1ceh18
Nine Thousand Nine Hundred and Eighty-Nine in Base 18 Octodecimal
9991
1cf118
Nine Thousand Nine Hundred and Ninety-One in Base 18 Octodecimal
9992
1cf218
Nine Thousand Nine Hundred and Ninety-Two in Base 18 Octodecimal
9993
1cf318
Nine Thousand Nine Hundred and Ninety-Three in Base 18 Octodecimal

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

9.990e3

Reciprocal

A number multiplied with its reciprocal is one.

0.000a92b52ee3c9gd18

The reciprocal of 9990 in Base 18 Octodecimal.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 1cf018 is not a palindrome.

Not A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

Nine thousand nine hundred and ninety is a composite number with 32 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

A Composite

Composites have more than just these two factors.

Nine thousand nine hundred and ninety is a composite number with 32 total factors (including 1 and itself).

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number nine thousand nine hundred and ninety has the following 4 prime factors:

2
218
Two in Base 18 Octodecimal
3
318
Three in Base 18 Octodecimal
5
518
Five in Base 18 Octodecimal
37
2118
Thirty-Seven in Base 18 Octodecimal

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

2181 · 3183 · 5181 · 21181 = 1cf018

Base Conversions

The number nine thousand nine hundred and ninety in 35 different bases