204998953 has 2 divisors, whose sum is σ = 204998954. Its totient is φ = 204998952.

The previous prime is 204998947. The next prime is 204998957. The reversal of 204998953 is 359899402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168662169 + 36336784 = 12987^2 + 6028^2 .

It is a cyclic number.

It is not a de Polignac number, because 204998953 - 2⁹ = 204998441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204998897 and 204998906.

It is not a weakly prime, because it can be changed into another prime (204998957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102499476 + 102499477.

It is an arithmetic number, because the mean of its divisors is an integer number (102499477).

Almost surely, 2^204998953 is an apocalyptic number.

It is an amenable number.

204998953 is a deficient number, since it is larger than the sum of its proper divisors (1).

204998953 is an equidigital number, since it uses as much as digits as its factorization.

204998953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 204998953 is about 14317.7845004037. The cubic root of 204998953 is about 589.6358501745.

The spelling of 204998953 in words is "two hundred four million, nine hundred ninety-eight thousand, nine hundred fifty-three".