204947863 has 2 divisors, whose sum is σ = 204947864. Its totient is φ = 204947862.

The previous prime is 204947839. The next prime is 204947879. The reversal of 204947863 is 368749402.

204947863 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 is a cyclic number.

It is not a de Polignac number, because 204947863 - 2¹⁷ = 204816791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204947803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102473931 + 102473932.

It is an arithmetic number, because the mean of its divisors is an integer number (102473932).

Almost surely, 2^204947863 is an apocalyptic number.

204947863 is a deficient number, since it is larger than the sum of its proper divisors (1).

204947863 is an equidigital number, since it uses as much as digits as its factorization.

204947863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 204947863 is about 14316.0002444817. Note that the first 3 decimals coincide. The cubic root of 204947863 is about 589.5868629349.

The spelling of 204947863 in words is "two hundred four million, nine hundred forty-seven thousand, eight hundred sixty-three".