85408 is nontrivially palindromic in base 12.
It is an unprimeable number.
85408 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
285408 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 85408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89586).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
85408 is a wasteful number, since it uses less digits than its factorization.
85408 is an odious number, because the sum of its binary digits is odd.
The square root of 85408 is about 292.2464713217. The cubic root of 85408 is about 44.0385337367.
Subtracting from 85408 its reverse (80458), we obtain a triangular number (4950 = T99).
The spelling of 85408 in words is "eighty-five thousand, four hundred eight".