204734489 has 2 divisors, whose sum is σ = 204734490. Its totient is φ = 204734488.

The previous prime is 204734471. The next prime is 204734503. The reversal of 204734489 is 984437402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204718864 + 15625 = 14308^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 204734489 - 2²⁰ = 203685913 is a prime.

It is a super-2 number, since 2×204734489² = 83832421972182242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204734419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102367244 + 102367245.

It is an arithmetic number, because the mean of its divisors is an integer number (102367245).

Almost surely, 2^204734489 is an apocalyptic number.

It is an amenable number.

204734489 is a deficient number, since it is larger than the sum of its proper divisors (1).

204734489 is an equidigital number, since it uses as much as digits as its factorization.

204734489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 204734489 is about 14308.5460127855. The cubic root of 204734489 is about 589.3821829268.

The spelling of 204734489 in words is "two hundred four million, seven hundred thirty-four thousand, four hundred eighty-nine".