20008199 has 2 divisors, whose sum is σ = 20008200. Its totient is φ = 20008198.

The previous prime is 20008187. The next prime is 20008207. The reversal of 20008199 is 99180002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20008199 - 2²⁰ = 18959623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20008129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10004099 + 10004100.

It is an arithmetic number, because the mean of its divisors is an integer number (10004100).

Almost surely, 2^20008199 is an apocalyptic number.

20008199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20008199 is an equidigital number, since it uses as much as digits as its factorization.

20008199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 20008199 is about 4473.0525371384. The cubic root of 20008199 is about 271.4788491087.

The spelling of 20008199 in words is "twenty million, eight thousand, one hundred ninety-nine".