99199911 has 4 divisors (see below), whose sum is σ = 132266552. Its totient is φ = 66133272.

The previous prime is 99199909. The next prime is 99199921. The reversal of 99199911 is 11999199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11999199 = 3 ⋅3999733.

It is not a de Polignac number, because 99199911 - 2¹ = 99199909 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 (99199921) 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 3 ways as a sum of consecutive naturals, for example, 16533316 + ... + 16533321.

It is an arithmetic number, because the mean of its divisors is an integer number (33066638).

Almost surely, 2^99199911 is an apocalyptic number.

99199911 is a deficient number, since it is larger than the sum of its proper divisors (33066641).

99199911 is a wasteful number, since it uses less digits than its factorization.

99199911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33066640.

The product of its digits is 59049, while the sum is 48.

The square root of 99199911 is about 9959.9152104825. The cubic root of 99199911 is about 462.9176724653.

The spelling of 99199911 in words is "ninety-nine million, one hundred ninety-nine thousand, nine hundred eleven".