9988229 has 2 divisors, whose sum is σ = 9988230. Its totient is φ = 9988228.

The previous prime is 9988213. The next prime is 9988249. The reversal of 9988229 is 9228899.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9597604 + 390625 = 3098^2 + 625^2 .

It is an emirp because it is prime and its reverse (9228899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9988229 - 2⁴ = 9988213 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9988249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994114 + 4994115.

It is an arithmetic number, because the mean of its divisors is an integer number (4994115).

Almost surely, 2^9988229 is an apocalyptic number.

It is an amenable number.

9988229 is a deficient number, since it is larger than the sum of its proper divisors (1).

9988229 is an equidigital number, since it uses as much as digits as its factorization.

9988229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 47.

The square root of 9988229 is about 3160.4159536365. The cubic root of 9988229 is about 215.3589029778.

The spelling of 9988229 in words is "nine million, nine hundred eighty-eight thousand, two hundred twenty-nine".