206445199 has 2 divisors, whose sum is σ = 206445200. Its totient is φ = 206445198.

The previous prime is 206445191. The next prime is 206445227. The reversal of 206445199 is 991544602.

206445199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206445199 - 2³ = 206445191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206445191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103222599 + 103222600.

It is an arithmetic number, because the mean of its divisors is an integer number (103222600).

Almost surely, 2^206445199 is an apocalyptic number.

206445199 is a deficient number, since it is larger than the sum of its proper divisors (1).

206445199 is an equidigital number, since it uses as much as digits as its factorization.

206445199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 206445199 is about 14368.2009660222. The cubic root of 206445199 is about 591.0192083602.

The spelling of 206445199 in words is "two hundred six million, four hundred forty-five thousand, one hundred ninety-nine".