1976 - Today
Jan Koum (Ukrainian: Ян Кум; born Yan Borysovych Kum, Ukrainian: Ян Борисович Кум, on February 24, 1976) is a Ukrainian-American billionaire businessman and computer programmer. He is the co-founder and former CEO of WhatsApp, a mobile messaging app which was acquired by Facebook in 2014 for US$19.3 billion. According to Forbes, he has an estimated net worth of US$15.2 billion as of October 2023, making him one of the richest people in the world. Read more on Wikipedia
Since 2007, the English Wikipedia page of Jan Koum has received more than 3,637,798 page views. His biography is available in 31 different languages on Wikipedia (up from 27 in 2019). Jan Koum is the 100th most popular computer scientist (up from 114th in 2019), the 603rd most popular biography from Ukraine (down from 594th in 2019) and the most popular Ukrainian Computer Scientist.
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Historical Popularity Index (HPI)
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Effective Languages (L*)
Coefficient of Variation (CV)
Among computer scientists, Jan Koum ranks 100 out of 201. Before him are Radia Perlman, Joseph Sifakis, Eugene Garfield, Manuel Blum, Edmund M. Clarke, and John Hopcroft. After him are Robert C. Martin, Betty Holberton, Evan Williams, Peter Norton, Scott Fahlman, and Robert Fano.
1951 - Present
HPI: 48.55
Rank: 94
1946 - Present
HPI: 48.53
Rank: 95
1925 - 2017
HPI: 48.47
Rank: 96
1938 - Present
HPI: 48.37
Rank: 97
1945 - 2020
HPI: 48.04
Rank: 98
1939 - Present
HPI: 47.85
Rank: 99
1976 - Present
HPI: 47.64
Rank: 100
1952 - Present
HPI: 47.50
Rank: 101
1917 - 2001
HPI: 47.36
Rank: 102
1972 - Present
HPI: 47.29
Rank: 103
1943 - Present
HPI: 47.26
Rank: 104
1948 - Present
HPI: 47.20
Rank: 105
1917 - 2016
HPI: 47.04
Rank: 106
Among people born in 1976, Jan Koum ranks 105. Before him are Nicholas Gonzalez, Jonathan Nolan, Edmílson, Giba, Remy Bonjasky, and Andrew Scott. After him are Giovanna Antonelli, Mario Yepes, Emma Bunton, Gábor Király, Boudewijn Zenden, and Wang Leehom.
1976 - Present
HPI: 47.94
Rank: 99
1976 - Present
HPI: 47.94
Rank: 100
1976 - Present
HPI: 47.92
Rank: 101
1976 - Present
HPI: 47.88
Rank: 102
1976 - Present
HPI: 47.87
Rank: 103
1976 - Present
HPI: 47.76
Rank: 104
1976 - Present
HPI: 47.64
Rank: 105
1976 - Present
HPI: 47.58
Rank: 106
1976 - Present
HPI: 47.57
Rank: 107
1976 - Present
HPI: 47.52
Rank: 108
1976 - Present
HPI: 47.50
Rank: 109
1976 - Present
HPI: 47.48
Rank: 110
1976 - Present
HPI: 47.37
Rank: 111
Among people born in Ukraine, Jan Koum ranks 603 out of 1,083. Before him are Mikhail Kheraskov (1733), Nicholas Charnetsky (1884), Stanisław Ostrowski (1892), Yan Gamarnik (1894), Mark Donskoy (1901), and Valentina Lisitsa (1973). After him are Mark Krein (1907), Nina Dumbadze (1919), Heinrich Schenker (1868), Zellig Harris (1909), Viktor Tsybulenko (1930), and Hélène Sparrow (1891).
1733 - 1807
HPI: 47.87
Rank: 597
1884 - 1959
HPI: 47.82
Rank: 598
1892 - 1982
HPI: 47.82
Rank: 599
1894 - 1937
HPI: 47.81
Rank: 600
1901 - 1981
HPI: 47.75
Rank: 601
1973 - Present
HPI: 47.73
Rank: 602
1976 - Present
HPI: 47.64
Rank: 603
1907 - 1989
HPI: 47.53
Rank: 604
1919 - 1983
HPI: 47.52
Rank: 605
1868 - 1935
HPI: 47.45
Rank: 606
1909 - 1992
HPI: 47.44
Rank: 607
1930 - 2013
HPI: 47.42
Rank: 608
1891 - 1970
HPI: 47.42
Rank: 609
Among computer scientists born in Ukraine, Jan Koum ranks 1. After him are Abraham Lempel (1936).