8109009099 has 12 divisors (see below), whose sum is σ = 12222274896. Its totient is φ = 5170962192.

The previous prime is 8109009091. The next prime is 8109009113. The reversal of 8109009099 is 9909009018.

It is not a de Polignac number, because 8109009099 - 2³ = 8109009091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8109009091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19586772 + ... + 19587185.

It is an arithmetic number, because the mean of its divisors is an integer number (1018522908).

Almost surely, 2^8109009099 is an apocalyptic number.

8109009099 is a deficient number, since it is larger than the sum of its proper divisors (4113265797).

8109009099 is a wasteful number, since it uses less digits than its factorization.

8109009099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39173986 (or 39173983 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 8109009099 is about 90050.0366407477. The cubic root of 8109009099 is about 2009.0431407582.

The spelling of 8109009099 in words is "eight billion, one hundred nine million, nine thousand, ninety-nine".