445589 has 2 divisors, whose sum is σ = 445590. Its totient is φ = 445588.

The previous prime is 445583. The next prime is 445597. The reversal of 445589 is 985544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 442225 + 3364 = 665^2 + 58^2 .

It is a cyclic number.

It is not a de Polignac number, because 445589 - 2⁴ = 445573 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222794 + 222795.

It is an arithmetic number, because the mean of its divisors is an integer number (222795).

2⁴⁴⁵⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

445589 is a deficient number, since it is larger than the sum of its proper divisors (1).

445589 is an equidigital number, since it uses as much as digits as its factorization.

445589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

The square root of 445589 is about 667.5245313844. The cubic root of 445589 is about 76.3797361351.

It can be divided in two parts, 4455 and 89, that multiplied together give a triangular number (396495 = T₈₉₀).

The spelling of 445589 in words is "four hundred forty-five thousand, five hundred eighty-nine".