9090099900909 has 48 divisors (see below), whose sum is σ = 14382557046000. Its totient is φ = 5506665873408.

The previous prime is 9090099900901. The next prime is 9090099900911.

9090099900909 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 401547807684 + 8688552093225 = 633678^2 + 2947635^2 .

It is not a de Polignac number, because 9090099900909 - 2³ = 9090099900901 is a prime.

It is a super-3 number, since 3×9090099900909³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090099900901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157258317 + ... + 157316109.

It is an arithmetic number, because the mean of its divisors is an integer number (299636605125).

Almost surely, 2^{9090099900909} is an apocalyptic number.

It is an amenable number.

9090099900909 is a deficient number, since it is larger than the sum of its proper divisors (5292457145091).

9090099900909 is a wasteful number, since it uses less digits than its factorization.

9090099900909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93294 (or 93291 counting only the distinct ones).

The product of its (nonzero) digits is 4782969, while the sum is 63.

The spelling of 9090099900909 in words is "nine trillion, ninety billion, ninety-nine million, nine hundred thousand, nine hundred nine".