9989953229 has 2 divisors, whose sum is σ = 9989953230. Its totient is φ = 9989953228.

The previous prime is 9989953163. The next prime is 9989953231. The reversal of 9989953229 is 9223599899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7926340900 + 2063612329 = 89030^2 + 45427^2 .

It is a cyclic number.

It is not a de Polignac number, because 9989953229 - 2¹² = 9989949133 is a prime.

Together with 9989953231, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9989953529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4994976614 + 4994976615.

It is an arithmetic number, because the mean of its divisors is an integer number (4994976615).

Almost surely, 2^9989953229 is an apocalyptic number.

It is an amenable number.

9989953229 is a deficient number, since it is larger than the sum of its proper divisors (1).

9989953229 is an equidigital number, since it uses as much as digits as its factorization.

9989953229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28343520, while the sum is 65.

The square root of 9989953229 is about 99949.7535214570. The cubic root of 9989953229 is about 2153.7129445387.

The spelling of 9989953229 in words is "nine billion, nine hundred eighty-nine million, nine hundred fifty-three thousand, two hundred twenty-nine".