It is a nialpdrome in base 14.
It is an unprimeable number.
2439040 is an apocalyptic number.
439040 is a gapful number since it is divisible by the number (40) 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 439040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613200).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
439040 is an frugal number, since it uses more digits than its factorization.
439040 is an odious number, because the sum of its binary digits is odd.
The square root of 439040 is about 662.6009357072. The cubic root of 439040 is about 76.0036932647.
439040 divided by its sum of digits (20) gives a cube (21952 = 283).
Adding to 439040 its reverse (40934), we get a palindrome (479974).
The spelling of 439040 in words is "four hundred thirty-nine thousand, forty".