206201939 has 2 divisors, whose sum is σ = 206201940. Its totient is φ = 206201938.

The previous prime is 206201917. The next prime is 206201951. The reversal of 206201939 is 939102602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206201939 - 2¹² = 206197843 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (206201909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103100969 + 103100970.

It is an arithmetic number, because the mean of its divisors is an integer number (103100970).

Almost surely, 2^206201939 is an apocalyptic number.

206201939 is a deficient number, since it is larger than the sum of its proper divisors (1).

206201939 is an equidigital number, since it uses as much as digits as its factorization.

206201939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 206201939 is about 14359.7332496116. The cubic root of 206201939 is about 590.7869791130.

The spelling of 206201939 in words is "two hundred six million, two hundred one thousand, nine hundred thirty-nine".