It is a happy number.
159440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
159440 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.
It is a tau number, because it is divible by the number of its divisors (20).
It is a nialpdrome in base 11.
It is a congruent number.
It is an unprimeable number.
2159440 is an apocalyptic number.
159440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
159440 is a wasteful number, since it uses less digits than its factorization.
159440 is an odious number, because the sum of its binary digits is odd.
The square root of 159440 is about 399.2993864258. The cubic root of 159440 is about 54.2249418843.
The spelling of 159440 in words is "one hundred fifty-nine thousand, four hundred forty".