99388799999 has 4 divisors (see below), whose sum is σ = 99399770664. Its totient is φ = 99377829336.

The previous prime is 99388799989. The next prime is 99388800011. The reversal of 99388799999 is 99999788399.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99388799999 - 2¹⁶ = 99388734463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99388799989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5471732 + ... + 5489865.

It is an arithmetic number, because the mean of its divisors is an integer number (24849942666).

Almost surely, 2^99388799999 is an apocalyptic number.

99388799999 is a deficient number, since it is larger than the sum of its proper divisors (10970665).

99388799999 is a wasteful number, since it uses less digits than its factorization.

99388799999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10970664.

The product of its digits is 6428310336, while the sum is 89.

The spelling of 99388799999 in words is "ninety-nine billion, three hundred eighty-eight million, seven hundred ninety-nine thousand, nine hundred ninety-nine".