204443429 has 2 divisors, whose sum is σ = 204443430. Its totient is φ = 204443428.

The previous prime is 204443399. The next prime is 204443431. The reversal of 204443429 is 924344402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107952100 + 96491329 = 10390^2 + 9823^2 .

It is a cyclic number.

It is not a de Polignac number, because 204443429 - 2²⁰ = 203394853 is a prime.

It is a super-2 number, since 2×204443429² = 83594231322556082, which contains 22 as substring.

Together with 204443431, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 204443395 and 204443404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204443489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102221714 + 102221715.

It is an arithmetic number, because the mean of its divisors is an integer number (102221715).

Almost surely, 2^204443429 is an apocalyptic number.

It is an amenable number.

204443429 is a deficient number, since it is larger than the sum of its proper divisors (1).

204443429 is an equidigital number, since it uses as much as digits as its factorization.

204443429 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 32.

The square root of 204443429 is about 14298.3715506347. The cubic root of 204443429 is about 589.1027528291.

The spelling of 204443429 in words is "two hundred four million, four hundred forty-three thousand, four hundred twenty-nine".