204039697 has 2 divisors, whose sum is σ = 204039698. Its totient is φ = 204039696.

The previous prime is 204039659. The next prime is 204039707. The reversal of 204039697 is 796930402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191656336 + 12383361 = 13844^2 + 3519^2 .

It is a cyclic number.

It is not a de Polignac number, because 204039697 - 2⁷ = 204039569 is a prime.

It is not a weakly prime, because it can be changed into another prime (204039637) 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, 102019848 + 102019849.

It is an arithmetic number, because the mean of its divisors is an integer number (102019849).

Almost surely, 2^204039697 is an apocalyptic number.

It is an amenable number.

204039697 is a deficient number, since it is larger than the sum of its proper divisors (1).

204039697 is an equidigital number, since it uses as much as digits as its factorization.

204039697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 204039697 is about 14284.2464624495. The cubic root of 204039697 is about 588.7147133495.

The spelling of 204039697 in words is "two hundred four million, thirty-nine thousand, six hundred ninety-seven".