Subtracting from 89888 its reverse (88898), we obtain a triangular number (990 = T44).
It is an ABA number since it can be written as A⋅BA, here for A=2, B=212.
It is a Duffinian number.
It is an unprimeable number.
289888 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 89888
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
89888 is an equidigital number, since it uses as much as digits as its factorization.
89888 is an evil number, because the sum of its binary digits is even.
The square root of 89888 is about 299.8132752231. The cubic root of 89888 is about 44.7954502182.
The spelling of 89888 in words is "eighty-nine thousand, eight hundred eighty-eight".