99988811 has 16 divisors (see below), whose sum is σ = 113783040. Its totient is φ = 87104160.

The previous prime is 99988807. The next prime is 99988813. The reversal of 99988811 is 11888999.

It is not a de Polignac number, because 99988811 - 2² = 99988807 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99988813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81146 + ... + 82368.

It is an arithmetic number, because the mean of its divisors is an integer number (7111440).

Almost surely, 2^99988811 is an apocalyptic number.

99988811 is a deficient number, since it is larger than the sum of its proper divisors (13794229).

99988811 is a wasteful number, since it uses less digits than its factorization.

99988811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586.

The product of its digits is 373248, while the sum is 53.

The square root of 99988811 is about 9999.4405343499. The cubic root of 99988811 is about 464.1415711364.

The spelling of 99988811 in words is "ninety-nine million, nine hundred eighty-eight thousand, eight hundred eleven".