90558289 has 2 divisors, whose sum is σ = 90558290. Its totient is φ = 90558288.

The previous prime is 90558283. The next prime is 90558353. The reversal of 90558289 is 98285509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86490000 + 4068289 = 9300^2 + 2017^2 .

It is a cyclic number.

It is not a de Polignac number, because 90558289 - 2⁹ = 90557777 is a prime.

It is not a weakly prime, because it can be changed into another prime (90558283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45279144 + 45279145.

It is an arithmetic number, because the mean of its divisors is an integer number (45279145).

Almost surely, 2^90558289 is an apocalyptic number.

It is an amenable number.

90558289 is a deficient number, since it is larger than the sum of its proper divisors (1).

90558289 is an equidigital number, since it uses as much as digits as its factorization.

90558289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 90558289 is about 9516.2119039038. The cubic root of 90558289 is about 449.0652018480.

The spelling of 90558289 in words is "ninety million, five hundred fifty-eight thousand, two hundred eighty-nine".