209419211 has 2 divisors, whose sum is σ = 209419212. Its totient is φ = 209419210.

The previous prime is 209419201. The next prime is 209419219. The reversal of 209419211 is 112914902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 209419211 - 2²² = 205224907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (209419219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104709605 + 104709606.

It is an arithmetic number, because the mean of its divisors is an integer number (104709606).

Almost surely, 2^209419211 is an apocalyptic number.

209419211 is a deficient number, since it is larger than the sum of its proper divisors (1).

209419211 is an equidigital number, since it uses as much as digits as its factorization.

209419211 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 209419211 is about 14471.3237473287. The cubic root of 209419211 is about 593.8437267219.

The spelling of 209419211 in words is "two hundred nine million, four hundred nineteen thousand, two hundred eleven".