99090909099 has 72 divisors (see below), whose sum is σ = 179758680192. Its totient is φ = 52136179200.

The previous prime is 99090909077. The next prime is 99090909101.

99090909099 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99090909099 - 2¹² = 99090905003 is a prime.

It is a super-3 number, since 3×99090909099³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (99090909899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2277382 + ... + 2320484.

It is an arithmetic number, because the mean of its divisors is an integer number (2496648336).

Almost surely, 2^99090909099 is an apocalyptic number.

99090909099 is a deficient number, since it is larger than the sum of its proper divisors (80667771093).

99090909099 is a wasteful number, since it uses less digits than its factorization.

99090909099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43537 (or 43527 counting only the distinct ones).

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

The spelling of 99090909099 in words is "ninety-nine billion, ninety million, nine hundred nine thousand, ninety-nine".