9878989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
9878989 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 a cyclic number.
It is an alternating number because its digits alternate between odd and even.
It is a Duffinian number.
It is a congruent number.
Almost surely, 29878989 is an apocalyptic number.
It is an amenable number.
9878989 is a wasteful number, since it uses less digits than its factorization.
9878989 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5555.
The square root of 9878989 is about 3143.0859040122. The cubic root of 9878989 is about 214.5709055003.
The spelling of 9878989 in words is "nine million, eight hundred seventy-eight thousand, nine hundred eighty-nine".