9985212 has 36 divisors (see below), whose sum is σ = 25659816. Its totient is φ = 3273120.

The previous prime is 9985207. The next prime is 9985229. The reversal of 9985212 is 2125899.

9985212 is digitally balanced in base 2 and base 4, because in such bases 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 (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78 + ... + 4469.

Almost surely, 2^9985212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9985212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12829908).

9985212 is an abundant number, since it is smaller than the sum of its proper divisors (15674604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9985212 is a wasteful number, since it uses less digits than its factorization.

9985212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4618 (or 4613 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 9985212 is about 3159.9386069986. The cubic root of 9985212 is about 215.3372173437.

The spelling of 9985212 in words is "nine million, nine hundred eighty-five thousand, two hundred twelve".