438589 has 2 divisors, whose sum is σ = 438590. Its totient is φ = 438588.

The previous prime is 438569. The next prime is 438601. The reversal of 438589 is 985834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 432964 + 5625 = 658^2 + 75^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438589 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438569) 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, 219294 + 219295.

It is an arithmetic number, because the mean of its divisors is an integer number (219295).

2⁴³⁸⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

438589 is a deficient number, since it is larger than the sum of its proper divisors (1).

438589 is an equidigital number, since it uses as much as digits as its factorization.

438589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 438589 is about 662.2605227552. The cubic root of 438589 is about 75.9776596386.

The spelling of 438589 in words is "four hundred thirty-eight thousand, five hundred eighty-nine".