399360 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a tau number, because it is divible by the number of its divisors (96).
It is a zygodrome in base 2 and base 9.
It is a congruent number.
It is an unprimeable number.
399360 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2399360 is an apocalyptic number.
399360 is a gapful number since it is divisible by the number (30) 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 399360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (687960).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
399360 is a wasteful number, since it uses less digits than its factorization.
399360 is an evil number, because the sum of its binary digits is even.
The square root of 399360 is about 631.9493650602. The cubic root of 399360 is about 73.6413126601.
The spelling of 399360 in words is "three hundred ninety-nine thousand, three hundred sixty".