9561222909 has 40 divisors (see below), whose sum is σ = 17283423168. Its totient is φ = 5142165120.

The previous prime is 9561222901. The next prime is 9561222911. The reversal of 9561222909 is 9092221659.

9561222909 is a `hidden beast` number, since 9 + 5 + 612 + 2 + 29 + 0 + 9 = 666.

It is not a de Polignac number, because 9561222909 - 2³ = 9561222901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9561222901) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 486327 + ... + 505604.

Almost surely, 2^9561222909 is an apocalyptic number.

It is an amenable number.

9561222909 is a deficient number, since it is larger than the sum of its proper divisors (7722200259).

9561222909 is a wasteful number, since it uses less digits than its factorization.

9561222909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991967 (or 991958 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 9561222909 is about 97781.5059661079. The cubic root of 9561222909 is about 2122.4516928910.

The spelling of 9561222909 in words is "nine billion, five hundred sixty-one million, two hundred twenty-two thousand, nine hundred nine".