Harman Patil (Editor)

189 (number)

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189
  
190 →

Roman numeral
  
CLXXXIX

Factorization
  
3× 7

Binary
  
101111012

Cardinal
  
one hundred eighty-nine

Ordinal
  
189th (one hundred and eighty-ninth)

189 (one hundred [and] eighty-nine) is the natural number following 188 and preceding 190.

Contents

In mathematics

189 is:

  • an odd number
  • a centered cube number
  • a composite number
  • a deficient number, as 131 is less than 189
  • a heptagonal number
  • a lucky number
  • a Ulam number
  • a 64-gonal number
  • a Kaprekar constant in base 2
  • palindromic in bases 2 (101111012), 20 (9920), 26 (7726) and 62 (3362).
  • a Harshad number in bases 3, 4, 5, 6, 7, 11, 13, 15 (and 28 other bases).
  • the sum of the sums of the divisors of the first 15 positive integers.

    • Also:

  • 189 can be written as sum of two cubes in two ways: 43 + 53 and 63 + (-3)3 (The smallest number that can be written as the sum of 2 positive only cubes in two ways is 1729)
  • Divisors of 189: 1, 3, 7, 9, 21, 27, 63, 189

    • In astronomy

  • 189 Phthia is a bright rocky main belt asteroid
  • NGC 189 is an open cluster in the Cassiopeia constellation

    • In geography

  • Lumsden No. 189, Saskatchewan in southwestern Saskatchewan, Canada

    • In the military

  • 189th Airlift Squadron is a unit of the Idaho Air National Guard
  • 189th Airlift Wing airlift unit, part of the Arkansas National Guard at Little Rock AFB, Arkansas
  • 189th Infantry Brigade, an Infantry brigade of the United States Army based at Fort Bragg
  • HMAS Pirie (J189) was a Royal Australian Navy Bathurst class corvettes during World War II
  • LSMR-189 was a United States Navy landing ship medium during World War II
  • No. 189 Squadron RAF was a Royal Air Force squadron during World War I
  • USNS John Lenthall (T-AO-189) is a United States Navy Henry J. Kaiser class fleet replenishment oiler
  • USNS Lt. Raymond O. Beaudoin (T-AP-189) was a United States Navy troop transport during the Korean War
  • USS Bronstein (DE-189) was a United States Navy destroyer escort during World War II
  • USS Hidalgo (AK-189) was a United States Navy Alamosa-class cargo ship during World War II
  • USS Oxford (APA-189) was a United States Navy Haskell-class attack transport during World War II
  • USS Saury (SS-189) was a United States Navy Sargo-class submarine during World War II
  • USS Semmes (DD-189) was a United States Navy Clemson-class destroyer during World War II

    • In music

  • The song What a Beautiful Day (2003) by Chris Cagle includes the lyrics, "Day 189. Oh, I almost lost that girl to my foolish pride"

    • In transportation

  • London Buses route 189
  • Air Canada Flight 189 flight from Ottawa to Vancouver crashed on takeoff on June 26, 1978
  • USA-189, an experimental satellite launched June 21, 2006
  • DB AG electric locomotive class 189, a Siemens EuroSprinter ES64F4

    • In other fields

    189 is also:

  • The year AD 189 or 189 BC
  • The atomic number of an element temporarily called Unoctennium
  • Minuscule 189 is a Greek minuscule manuscript of the New Testament, on parchment

    • References

    189 (number) Wikipedia
    (Text) CC BY-SA