99864211 has 2 divisors, whose sum is σ = 99864212. Its totient is φ = 99864210.

The previous prime is 99864199. The next prime is 99864227. The reversal of 99864211 is 11246899.

99864211 is nontrivially palindromic in base 14.

It is a weak prime.

It is an emirp because it is prime and its reverse (11246899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99864211 - 2¹⁵ = 99831443 is a prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (99864241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49932105 + 49932106.

It is an arithmetic number, because the mean of its divisors is an integer number (49932106).

Almost surely, 2^99864211 is an apocalyptic number.

99864211 is a deficient number, since it is larger than the sum of its proper divisors (1).

99864211 is an equidigital number, since it uses as much as digits as its factorization.

99864211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 99864211 is about 9993.2082436023. The cubic root of 99864211 is about 463.9486959601.

The spelling of 99864211 in words is "ninety-nine million, eight hundred sixty-four thousand, two hundred eleven".