9099909 has 48 divisors (see below), whose sum is σ = 16633344. Its totient is φ = 4665600.

The previous prime is 9099907. The next prime is 9099929.

9099909 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9099909 - 2¹ = 9099907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9099901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33444 + ... + 33714.

It is an arithmetic number, because the mean of its divisors is an integer number (346528).

Almost surely, 2^9099909 is an apocalyptic number.

It is an amenable number.

9099909 is a deficient number, since it is larger than the sum of its proper divisors (7533435).

9099909 is a wasteful number, since it uses less digits than its factorization.

9099909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 59049, while the sum is 45.

The square root of 9099909 is about 3016.6055426588. The cubic root of 9099909 is about 208.7752519442.

It can be divided in two parts, 90 and 99909, that added together give a palindrome (99999).

The spelling of 9099909 in words is "nine million, ninety-nine thousand, nine hundred nine".