85008589 has 2 divisors, whose sum is σ = 85008590. Its totient is φ = 85008588.

The previous prime is 85008533. The next prime is 85008601. The reversal of 85008589 is 98580058.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78907689 + 6100900 = 8883^2 + 2470^2 .

It is a cyclic number.

It is not a de Polignac number, because 85008589 - 2¹⁷ = 84877517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85008689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42504294 + 42504295.

It is an arithmetic number, because the mean of its divisors is an integer number (42504295).

Almost surely, 2^85008589 is an apocalyptic number.

It is an amenable number.

85008589 is a deficient number, since it is larger than the sum of its proper divisors (1).

85008589 is an equidigital number, since it uses as much as digits as its factorization.

85008589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 43.

The square root of 85008589 is about 9220.0102494520. The cubic root of 85008589 is about 439.6977762739.

The spelling of 85008589 in words is "eighty-five million, eight thousand, five hundred eighty-nine".