204012089 has 2 divisors, whose sum is σ = 204012090. Its totient is φ = 204012088.

The previous prime is 204012077. The next prime is 204012097. The reversal of 204012089 is 980210402.

204012089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182925625 + 21086464 = 13525^2 + 4592^2 .

It is a cyclic number.

It is not a de Polignac number, because 204012089 - 2²⁰ = 202963513 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (204012689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102006044 + 102006045.

It is an arithmetic number, because the mean of its divisors is an integer number (102006045).

Almost surely, 2^204012089 is an apocalyptic number.

It is an amenable number.

204012089 is a deficient number, since it is larger than the sum of its proper divisors (1).

204012089 is an equidigital number, since it uses as much as digits as its factorization.

204012089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 204012089 is about 14283.2800504646. The cubic root of 204012089 is about 588.6881597439.

The spelling of 204012089 in words is "two hundred four million, twelve thousand, eighty-nine".