8539440 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.
It is a congruent number.
Almost surely, 28539440 is an apocalyptic number.
8539440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 8539440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17998848).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
8539440 is a wasteful number, since it uses less digits than its factorization.
8539440 is an evil number, because the sum of its binary digits is even.
The square root of 8539440 is about 2922.2320236422. The cubic root of 8539440 is about 204.3979161428.
The spelling of 8539440 in words is "eight million, five hundred thirty-nine thousand, four hundred forty".