205395079 has 2 divisors, whose sum is σ = 205395080. Its totient is φ = 205395078.

The previous prime is 205395059. The next prime is 205395089. The reversal of 205395079 is 970593502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205395079 - 2⁷ = 205394951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205395049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102697539 + 102697540.

It is an arithmetic number, because the mean of its divisors is an integer number (102697540).

Almost surely, 2^205395079 is an apocalyptic number.

205395079 is a deficient number, since it is larger than the sum of its proper divisors (1).

205395079 is an equidigital number, since it uses as much as digits as its factorization.

205395079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 205395079 is about 14331.6111794871. The cubic root of 205395079 is about 590.0153965148.

The spelling of 205395079 in words is "two hundred five million, three hundred ninety-five thousand, seventy-nine".