9909265309 has 2 divisors, whose sum is σ = 9909265310. Its totient is φ = 9909265308.

The previous prime is 9909265213. The next prime is 9909265313. The reversal of 9909265309 is 9035629099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9374499684 + 534765625 = 96822^2 + 23125^2 .

It is a cyclic number.

It is not a de Polignac number, because 9909265309 - 2¹⁷ = 9909134237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9909266309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4954632654 + 4954632655.

It is an arithmetic number, because the mean of its divisors is an integer number (4954632655).

Almost surely, 2^9909265309 is an apocalyptic number.

It is an amenable number.

9909265309 is a deficient number, since it is larger than the sum of its proper divisors (1).

9909265309 is an equidigital number, since it uses as much as digits as its factorization.

9909265309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1180980, while the sum is 52.

The square root of 9909265309 is about 99545.2927515912. The cubic root of 9909265309 is about 2147.8988167813.

The spelling of 9909265309 in words is "nine billion, nine hundred nine million, two hundred sixty-five thousand, three hundred nine".