204953447 has 2 divisors, whose sum is σ = 204953448. Its totient is φ = 204953446.

The previous prime is 204953443. The next prime is 204953449. The reversal of 204953447 is 744359402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204953447 - 2² = 204953443 is a prime.

Together with 204953449, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204953447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204953443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102476723 + 102476724.

It is an arithmetic number, because the mean of its divisors is an integer number (102476724).

Almost surely, 2^204953447 is an apocalyptic number.

204953447 is a deficient number, since it is larger than the sum of its proper divisors (1).

204953447 is an equidigital number, since it uses as much as digits as its factorization.

204953447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 204953447 is about 14316.1952696937. The cubic root of 204953447 is about 589.5922175051.

The spelling of 204953447 in words is "two hundred four million, nine hundred fifty-three thousand, four hundred forty-seven".