99919011 has 4 divisors (see below), whose sum is σ = 133225352. Its totient is φ = 66612672.

The previous prime is 99918989. The next prime is 99919019. The reversal of 99919011 is 11091999.

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

It is not a de Polignac number, because 99919011 - 2⁶ = 99918947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99919019) 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, 16653166 + ... + 16653171.

It is an arithmetic number, because the mean of its divisors is an integer number (33306338).

Almost surely, 2^99919011 is an apocalyptic number.

99919011 is a deficient number, since it is larger than the sum of its proper divisors (33306341).

99919011 is a wasteful number, since it uses less digits than its factorization.

99919011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33306340.

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

The square root of 99919011 is about 9995.9497297656. The cubic root of 99919011 is about 464.0335436387.

The spelling of 99919011 in words is "ninety-nine million, nine hundred nineteen thousand, eleven".