9988212 has 48 divisors (see below), whose sum is σ = 25699520. Its totient is φ = 2999808.

The previous prime is 9988211. The next prime is 9988213. The reversal of 9988212 is 2128899.

It is an interprime number because it is at equal distance from previous prime (9988211) and next prime (9988213).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9988211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5964 + ... + 7452.

Almost surely, 2^9988212 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 9988212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12849760).

9988212 is an abundant number, since it is smaller than the sum of its proper divisors (15711308).

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

9988212 is a wasteful number, since it uses less digits than its factorization.

9988212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552 (or 1550 counting only the distinct ones).

The product of its digits is 20736, while the sum is 39.

The square root of 9988212 is about 3160.4132641159. The cubic root of 9988212 is about 215.3587807972.

The spelling of 9988212 in words is "nine million, nine hundred eighty-eight thousand, two hundred twelve".