# 869

The numbers with a 9 subscript use Base 9 Nonary notation.

For more familiar numbers: See Seventy-Eight in Base 10 Decimal

## Nearby Numbers

Positive, nonzero integers within three units

75
839
Seventy-Five in Base 9 Nonary
76
849
Seventy-Six in Base 9 Nonary
77
859
Seventy-Seven in Base 9 Nonary
79
879
Seventy-Nine in Base 9 Nonary
80
889
Eighty in Base 9 Nonary
81
1009
Eighty-One in Base 9 Nonary

## Scientific Notation

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

## Reciprocal

A number multiplied with its reciprocal is one.

### `0.010310310310310319`

The reciprocal of 78 in Base 9 Nonary.

## Palindrome?

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

The number 869 is not a palindrome.

## Not A Prime Number

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

Seventy-eight is a composite number with 8 total factors (including 1 and itself).   See primes in Base 9 Nonary

## A Composite

Composites have more than just these two factors.

Seventy-eight is a composite number with 8 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 seventy-eight has the following 3 prime factors:

2
29
Two in Base 9 Nonary
3
39
Three in Base 9 Nonary
13
149
Thirteen in Base 9 Nonary

## Prime Factorization

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

## Base Conversions

The number seventy-eight in 35 different bases