Eighty-six is twice forty-three and reduces to fourteen and then five. In Jewish gematria it is the value of Elohim, God, aleph, lamed, he, yod, mem, totalling one, thirty, five, ten and forty, the name that denotes God in the aspect of judgement and natural power, as YHWH denotes mercy. Strikingly, the word ha-teva, nature, spelled he, tet, bet, ayin, also totals eighty-six, a coincidence that later thinkers, in the tradition associated with Spinoza's identification of God with Nature, took to express a hidden identity between the divine and the natural order.
In chemistry, eighty-six is the atomic number of radon, discovered in 1900 by Friedrich Ernst Dorn, who called it radium emanation; it was briefly renamed niton in 1908, from the Latin nitens, shining, before settling as radon in 1923.
Eighty-six factors as 2 x 43 and carries 4 divisors in all. Summing its proper divisors gives only 46, short of the number itself, which places it among the deficient numbers in the same classical scheme.
Florence Campbell, a student of Balliett's, restated and extended the chart in Your Days Are Numbered in 1931, and Juno Jordan, founder of the California Institute of Numerical Research, standardised the modern four-part chart of life path, expression, soul urge and personality numbers in 1965; both writers worked from name and birth date rather than from any older number philosophy.