99660099 has 16 divisors (see below), whose sum is σ = 165669120. Its totient is φ = 51771360.

The previous prime is 99660097. The next prime is 99660109. The reversal of 99660099 is 99006699.

It is not a de Polignac number, because 99660099 - 2¹ = 99660097 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99660097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215484 + ... + 215945.

It is an arithmetic number, because the mean of its divisors is an integer number (10354320).

Almost surely, 2^99660099 is an apocalyptic number.

99660099 is a deficient number, since it is larger than the sum of its proper divisors (66009021).

99660099 is a wasteful number, since it uses less digits than its factorization.

99660099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431450.

The product of its (nonzero) digits is 236196, while the sum is 48.

The square root of 99660099 is about 9982.9904838180. The cubic root of 99660099 is about 463.6323928324.

It can be divided in two parts, 996600 and 99, that added together give a palindrome (996699).

The spelling of 99660099 in words is "ninety-nine million, six hundred sixty thousand, ninety-nine".