99009009 has 24 divisors (see below), whose sum is σ = 161051904. Its totient is φ = 58068000.

The previous prime is 99008999. The next prime is 99009013. The reversal of 99009009 is 90090099.

It is not a de Polignac number, because 99009009 - 2⁵ = 99008977 is a prime.

99009009 is a modest number, since divided by 9009 gives 99 as remainder.

It is not an unprimeable number, because it can be changed into a prime (99009709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13062 + ... + 19199.

It is an arithmetic number, because the mean of its divisors is an integer number (6710496).

Almost surely, 2^99009009 is an apocalyptic number.

99009009 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

99009009 is a deficient number, since it is larger than the sum of its proper divisors (62042895).

99009009 is a wasteful number, since it uses less digits than its factorization.

99009009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32309 (or 32306 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 36.

The square root of 99009009 is about 9950.3270800512. The cubic root of 99009009 is about 462.6205328898.

The spelling of 99009009 in words is "ninety-nine million, nine thousand, nine".