9099985309 has 4 divisors (see below), whose sum is σ = 9224642716. Its totient is φ = 8975327904.

The previous prime is 9099985289. The next prime is 9099985373. The reversal of 9099985309 is 9035899909.

9099985309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4907422809 + 4192562500 = 70053^2 + 64750^2 .

It is a cyclic number.

It is not a de Polignac number, because 9099985309 - 2⁹ = 9099984797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9099985379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62328594 + ... + 62328739.

It is an arithmetic number, because the mean of its divisors is an integer number (2306160679).

Almost surely, 2^9099985309 is an apocalyptic number.

It is an amenable number.

9099985309 is a deficient number, since it is larger than the sum of its proper divisors (124657407).

9099985309 is a wasteful number, since it uses less digits than its factorization.

9099985309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124657406.

The product of its (nonzero) digits is 7085880, while the sum is 61.

The square root of 9099985309 is about 95393.8431399008. The cubic root of 9099985309 is about 2087.7583551729.

The spelling of 9099985309 in words is "nine billion, ninety-nine million, nine hundred eighty-five thousand, three hundred nine".