9949272209 has 2 divisors, whose sum is σ = 9949272210. Its totient is φ = 9949272208.

The previous prime is 9949272197. The next prime is 9949272217. The reversal of 9949272209 is 9022729499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7731333184 + 2217939025 = 87928^2 + 47095^2 .

It is a cyclic number.

It is not a de Polignac number, because 9949272209 - 2²⁴ = 9932494993 is a prime.

It is not a weakly prime, because it can be changed into another prime (9949272259) 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, 4974636104 + 4974636105.

It is an arithmetic number, because the mean of its divisors is an integer number (4974636105).

Almost surely, 2^9949272209 is an apocalyptic number.

It is an amenable number.

9949272209 is a deficient number, since it is larger than the sum of its proper divisors (1).

9949272209 is an equidigital number, since it uses as much as digits as its factorization.

9949272209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 9949272209 is about 99746.0385629424. The cubic root of 9949272209 is about 2150.7855221615.

The spelling of 9949272209 in words is "nine billion, nine hundred forty-nine million, two hundred seventy-two thousand, two hundred nine".