204223447 has 2 divisors, whose sum is σ = 204223448. Its totient is φ = 204223446.

The previous prime is 204223433. The next prime is 204223451. The reversal of 204223447 is 744322402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204223447 - 2¹⁹ = 203699159 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204223247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102111723 + 102111724.

It is an arithmetic number, because the mean of its divisors is an integer number (102111724).

Almost surely, 2^204223447 is an apocalyptic number.

204223447 is a deficient number, since it is larger than the sum of its proper divisors (1).

204223447 is an equidigital number, since it uses as much as digits as its factorization.

204223447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 204223447 is about 14290.6769258842. The cubic root of 204223447 is about 588.8913846432.

Adding to 204223447 its reverse (744322402), we get a palindrome (948545849).

The spelling of 204223447 in words is "two hundred four million, two hundred twenty-three thousand, four hundred forty-seven".