Subtracting from 9878 its reverse (8789), we obtain a square (1089 = 332).
9878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
9878 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.
It is a sphenic number, since it is the product of 3 distinct primes.
It is an alternating number because its digits alternate between odd and even.
It is a congruent number.
29878 is an apocalyptic number.
9878 is a wasteful number, since it uses less digits than its factorization.
9878 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 462.
The square root of 9878 is about 99.3881280637. The cubic root of 9878 is about 21.4563744926.
The spelling of 9878 in words is "nine thousand, eight hundred seventy-eight".