90325589 has 2 divisors, whose sum is σ = 90325590. Its totient is φ = 90325588.

The previous prime is 90325579. The next prime is 90325591. The reversal of 90325589 is 98552309.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82719025 + 7606564 = 9095^2 + 2758^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90325589 is a prime.

Together with 90325591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90325579) 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, 45162794 + 45162795.

It is an arithmetic number, because the mean of its divisors is an integer number (45162795).

Almost surely, 2^90325589 is an apocalyptic number.

It is an amenable number.

90325589 is a deficient number, since it is larger than the sum of its proper divisors (1).

90325589 is an equidigital number, since it uses as much as digits as its factorization.

90325589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 90325589 is about 9503.9775357479. The cubic root of 90325589 is about 448.6802302540.

The spelling of 90325589 in words is "ninety million, three hundred twenty-five thousand, five hundred eighty-nine".