1028204239 has 2 divisors, whose sum is σ = 1028204240. Its totient is φ = 1028204238.

The previous prime is 1028204237. The next prime is 1028204257. The reversal of 1028204239 is 9324028201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1028204239 - 2¹ = 1028204237 is a prime.

Together with 1028204237, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1028204239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028204231) 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, 514102119 + 514102120.

It is an arithmetic number, because the mean of its divisors is an integer number (514102120).

Almost surely, 2^1028204239 is an apocalyptic number.

1028204239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028204239 is an equidigital number, since it uses as much as digits as its factorization.

1028204239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1028204239 is about 32065.6239452782. The cubic root of 1028204239 is about 1009.3143858511.

The spelling of 1028204239 in words is "one billion, twenty-eight million, two hundred four thousand, two hundred thirty-nine".