204422389 has 2 divisors, whose sum is σ = 204422390. Its totient is φ = 204422388.

The previous prime is 204422377. The next prime is 204422417. The reversal of 204422389 is 983224402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199656900 + 4765489 = 14130^2 + 2183^2 .

It is a cyclic number.

It is not a de Polignac number, because 204422389 - 2⁵ = 204422357 is a prime.

It is a super-3 number, since 3×204422389³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204422329) 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, 102211194 + 102211195.

It is an arithmetic number, because the mean of its divisors is an integer number (102211195).

Almost surely, 2^204422389 is an apocalyptic number.

It is an amenable number.

204422389 is a deficient number, since it is larger than the sum of its proper divisors (1).

204422389 is an equidigital number, since it uses as much as digits as its factorization.

204422389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 204422389 is about 14297.6357835832. The cubic root of 204422389 is about 589.0825432497.

The spelling of 204422389 in words is "two hundred four million, four hundred twenty-two thousand, three hundred eighty-nine".