206039147 has 2 divisors, whose sum is σ = 206039148. Its totient is φ = 206039146.

The previous prime is 206039111. The next prime is 206039159. The reversal of 206039147 is 741930602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206039147 - 2²⁰ = 204990571 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206039177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103019573 + 103019574.

It is an arithmetic number, because the mean of its divisors is an integer number (103019574).

Almost surely, 2^206039147 is an apocalyptic number.

206039147 is a deficient number, since it is larger than the sum of its proper divisors (1).

206039147 is an equidigital number, since it uses as much as digits as its factorization.

206039147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 206039147 is about 14354.0637799893. The cubic root of 206039147 is about 590.6314669729.

Adding to 206039147 its reverse (741930602), we get a palindrome (947969749).

The spelling of 206039147 in words is "two hundred six million, thirty-nine thousand, one hundred forty-seven".