The Number

19989

Nineteen Thousand Nine Hundred and Eighty-Nine

In Base 7 Septenary Is

1121647

The numbers with a 7 subscript use Base 7 Septenary notation.

For more familiar numbers: See Nineteen Thousand Nine Hundred and Eighty-Nine in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

19986
1121617
Nineteen Thousand Nine Hundred and Eighty-Six in Base 7 Septenary
19987
1121627
Nineteen Thousand Nine Hundred and Eighty-Seven in Base 7 Septenary
19988
1121637
Nineteen Thousand Nine Hundred and Eighty-Eight in Base 7 Septenary
19990
1121657
Nineteen Thousand Nine Hundred and Ninety in Base 7 Septenary
19991
1121667
Nineteen Thousand Nine Hundred and Ninety-One in Base 7 Septenary
19992
1122007
Nineteen Thousand Nine Hundred and Ninety-Two in Base 7 Septenary

Scientific Notation

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

1.9989e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0000056125351301665264357

The reciprocal of 19989 in Base 7 Septenary.

Palindrome?

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

The number 1121647 is not a palindrome.

Not A Prime Number

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

Nineteen thousand nine hundred and eighty-nine is a composite number with 6 total factors (including 1 and itself).   See primes in Base 7 Septenary

A Composite

Composites have more than just these two factors.

Nineteen thousand nine hundred and eighty-nine is a composite number with 6 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 nineteen thousand nine hundred and eighty-nine has the following 2 prime factors:

3
37
Three in Base 7 Septenary
2221
63227
Two Thousand Two Hundred and Twenty-One in Base 7 Septenary

Prime Factorization

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

372 · 632271 = 1121647

Base Conversions

The number nineteen thousand nine hundred and eighty-nine in 35 different bases