258319289 has 2 divisors, whose sum is σ = 258319290. Its totient is φ = 258319288.

The previous prime is 258319277. The next prime is 258319331. The reversal of 258319289 is 982913852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151093264 + 107226025 = 12292^2 + 10355^2 .

It is a cyclic number.

It is not a de Polignac number, because 258319289 - 2¹² = 258315193 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (258319219) 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, 129159644 + 129159645.

It is an arithmetic number, because the mean of its divisors is an integer number (129159645).

Almost surely, 2^258319289 is an apocalyptic number.

It is an amenable number.

258319289 is a deficient number, since it is larger than the sum of its proper divisors (1).

258319289 is an equidigital number, since it uses as much as digits as its factorization.

258319289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The square root of 258319289 is about 16072.3143635259. The cubic root of 258319289 is about 636.8721807898.

The spelling of 258319289 in words is "two hundred fifty-eight million, three hundred nineteen thousand, two hundred eighty-nine".