204434340239 has 2 divisors, whose sum is σ = 204434340240. Its totient is φ = 204434340238.

The previous prime is 204434340217. The next prime is 204434340281. The reversal of 204434340239 is 932043434402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204434340239 - 2⁸ = 204434339983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204434340289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102217170119 + 102217170120.

It is an arithmetic number, because the mean of its divisors is an integer number (102217170120).

Almost surely, 2^204434340239 is an apocalyptic number.

204434340239 is a deficient number, since it is larger than the sum of its proper divisors (1).

204434340239 is an equidigital number, since it uses as much as digits as its factorization.

204434340239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 38.

The spelling of 204434340239 in words is "two hundred four billion, four hundred thirty-four million, three hundred forty thousand, two hundred thirty-nine".