985505589 has 16 divisors (see below), whose sum is σ = 1545891840. Its totient is φ = 618356160.

The previous prime is 985505557. The next prime is 985505597.

985505589 is a `hidden beast` number, since 9 + 8 + 5 + 50 + 5 + 589 = 666.

985505589 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 985505589 - 2⁵ = 985505557 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985504589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1073077 + ... + 1073994.

It is an arithmetic number, because the mean of its divisors is an integer number (96618240).

Almost surely, 2^985505589 is an apocalyptic number.

It is an amenable number.

985505589 is a deficient number, since it is larger than the sum of its proper divisors (560386251).

985505589 is a wasteful number, since it uses less digits than its factorization.

985505589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147097 (or 2147091 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 54.

The square root of 985505589 is about 31392.7633221416. The cubic root of 985505589 is about 995.1449967560.

The spelling of 985505589 in words is "nine hundred eighty-five million, five hundred five thousand, five hundred eighty-nine".