205996229 has 2 divisors, whose sum is σ = 205996230. Its totient is φ = 205996228.

The previous prime is 205996183. The next prime is 205996277. The reversal of 205996229 is 922699502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166281025 + 39715204 = 12895^2 + 6302^2 .

It is a cyclic number.

It is not a de Polignac number, because 205996229 - 2²⁰ = 204947653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 205996229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205998229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102998114 + 102998115.

It is an arithmetic number, because the mean of its divisors is an integer number (102998115).

Almost surely, 2^205996229 is an apocalyptic number.

It is an amenable number.

205996229 is a deficient number, since it is larger than the sum of its proper divisors (1).

205996229 is an equidigital number, since it uses as much as digits as its factorization.

205996229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 205996229 is about 14352.5687247963. The cubic root of 205996229 is about 590.5904545699.

The spelling of 205996229 in words is "two hundred five million, nine hundred ninety-six thousand, two hundred twenty-nine".