99143911 has 2 divisors, whose sum is σ = 99143912. Its totient is φ = 99143910.

The previous prime is 99143909. The next prime is 99143917. The reversal of 99143911 is 11934199.

It is a weak prime.

It is an emirp because it is prime and its reverse (11934199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99143911 - 2¹ = 99143909 is a prime.

Together with 99143909, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99143917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49571955 + 49571956.

It is an arithmetic number, because the mean of its divisors is an integer number (49571956).

Almost surely, 2^99143911 is an apocalyptic number.

99143911 is a deficient number, since it is larger than the sum of its proper divisors (1).

99143911 is an equidigital number, since it uses as much as digits as its factorization.

99143911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 37.

The square root of 99143911 is about 9957.1035447062. The cubic root of 99143911 is about 462.8305478265.

The spelling of 99143911 in words is "ninety-nine million, one hundred forty-three thousand, nine hundred eleven".