99808211 has 2 divisors, whose sum is σ = 99808212. Its totient is φ = 99808210.

The previous prime is 99808193. The next prime is 99808223. The reversal of 99808211 is 11280899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99808211 - 2⁶ = 99808147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (99808231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49904105 + 49904106.

It is an arithmetic number, because the mean of its divisors is an integer number (49904106).

Almost surely, 2^99808211 is an apocalyptic number.

99808211 is a deficient number, since it is larger than the sum of its proper divisors (1).

99808211 is an equidigital number, since it uses as much as digits as its factorization.

99808211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 99808211 is about 9990.4059477080. The cubic root of 99808211 is about 463.8619582301.

The spelling of 99808211 in words is "ninety-nine million, eight hundred eight thousand, two hundred eleven".