8558489 has 2 divisors, whose sum is σ = 8558490. Its totient is φ = 8558488.

The previous prime is 8558479. The next prime is 8558491. The reversal of 8558489 is 9848558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4376464 + 4182025 = 2092^2 + 2045^2 .

It is a cyclic number.

It is not a de Polignac number, because 8558489 - 2⁸ = 8558233 is a prime.

Together with 8558491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8558479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4279244 + 4279245.

It is an arithmetic number, because the mean of its divisors is an integer number (4279245).

Almost surely, 2^8558489 is an apocalyptic number.

It is an amenable number.

8558489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8558489 is an equidigital number, since it uses as much as digits as its factorization.

8558489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 47.

The square root of 8558489 is about 2925.4895316853. The cubic root of 8558489 is about 204.5497873171.

The spelling of 8558489 in words is "eight million, five hundred fifty-eight thousand, four hundred eighty-nine".