9917958229 has 2 divisors, whose sum is σ = 9917958230. Its totient is φ = 9917958228.

The previous prime is 9917958139. The next prime is 9917958277. The reversal of 9917958229 is 9228597199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9866448900 + 51509329 = 99330^2 + 7177^2 .

It is a cyclic number.

It is not a de Polignac number, because 9917958229 - 2⁹ = 9917957717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9917958289) 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, 4958979114 + 4958979115.

It is an arithmetic number, because the mean of its divisors is an integer number (4958979115).

Almost surely, 2^9917958229 is an apocalyptic number.

It is an amenable number.

9917958229 is a deficient number, since it is larger than the sum of its proper divisors (1).

9917958229 is an equidigital number, since it uses as much as digits as its factorization.

9917958229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 61.

The square root of 9917958229 is about 99588.9463193582. The cubic root of 9917958229 is about 2148.5267158497.

The spelling of 9917958229 in words is "nine billion, nine hundred seventeen million, nine hundred fifty-eight thousand, two hundred twenty-nine".