9939229 has 2 divisors, whose sum is σ = 9939230. Its totient is φ = 9939228.

The previous prime is 9939217. The next prime is 9939247. The reversal of 9939229 is 9229399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7851204 + 2088025 = 2802^2 + 1445^2 .

It is an emirp because it is prime and its reverse (9229399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9939229 - 2¹³ = 9931037 is a prime.

It is a super-2 number, since 2×9939229² = 197576546228882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9939269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4969614 + 4969615.

It is an arithmetic number, because the mean of its divisors is an integer number (4969615).

Almost surely, 2^9939229 is an apocalyptic number.

It is an amenable number.

9939229 is a deficient number, since it is larger than the sum of its proper divisors (1).

9939229 is an equidigital number, since it uses as much as digits as its factorization.

9939229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 43.

The square root of 9939229 is about 3152.6542785405. The cubic root of 9939229 is about 215.0061581074.

The spelling of 9939229 in words is "nine million, nine hundred thirty-nine thousand, two hundred twenty-nine".