99019911 has 16 divisors (see below), whose sum is σ = 133599488. Its totient is φ = 65232000.

The previous prime is 99019909. The next prime is 99019919. The reversal of 99019911 is 11991099.

It is not a de Polignac number, because 99019911 - 2¹ = 99019909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99019911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99019919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108720 + ... + 109626.

It is an arithmetic number, because the mean of its divisors is an integer number (8349968).

Almost surely, 2^99019911 is an apocalyptic number.

99019911 is a deficient number, since it is larger than the sum of its proper divisors (34579577).

99019911 is a wasteful number, since it uses less digits than its factorization.

99019911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302.

The product of its (nonzero) digits is 6561, while the sum is 39.

The square root of 99019911 is about 9950.8748861595. The cubic root of 99019911 is about 462.6375121661.

The spelling of 99019911 in words is "ninety-nine million, nineteen thousand, nine hundred eleven".