206040089 has 2 divisors, whose sum is σ = 206040090. Its totient is φ = 206040088.

The previous prime is 206040077. The next prime is 206040169. The reversal of 206040089 is 980040602.

206040089 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 can be written as a sum of positive squares in only one way, i.e., 179774464 + 26265625 = 13408^2 + 5125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206040089 is a prime.

It is equal to p_11394713 and since 206040089 and 11394713 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (206040589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103020044 + 103020045.

It is an arithmetic number, because the mean of its divisors is an integer number (103020045).

Almost surely, 2^206040089 is an apocalyptic number.

It is an amenable number.

206040089 is a deficient number, since it is larger than the sum of its proper divisors (1).

206040089 is an equidigital number, since it uses as much as digits as its factorization.

206040089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 206040089 is about 14354.0965929591. The cubic root of 206040089 is about 590.6323670833.

The spelling of 206040089 in words is "two hundred six million, forty thousand, eighty-nine".