99711911 has 4 divisors (see below), whose sum is σ = 107382072. Its totient is φ = 92041752.

The previous prime is 99711907. The next prime is 99711917. The reversal of 99711911 is 11911799.

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 99711911 - 2² = 99711907 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 (99711917) 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, 3835061 + ... + 3835086.

It is an arithmetic number, because the mean of its divisors is an integer number (26845518).

Almost surely, 2^99711911 is an apocalyptic number.

99711911 is a deficient number, since it is larger than the sum of its proper divisors (7670161).

99711911 is a wasteful number, since it uses less digits than its factorization.

99711911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670160.

The product of its digits is 5103, while the sum is 38.

The square root of 99711911 is about 9985.5851606203. The cubic root of 99711911 is about 463.7127244131.

The spelling of 99711911 in words is "ninety-nine million, seven hundred eleven thousand, nine hundred eleven".