985747589 has 2 divisors, whose sum is σ = 985747590. Its totient is φ = 985747588.

The previous prime is 985747573. The next prime is 985747603.

985747589 is nontrivially palindromic in base 10.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 657050689 + 328696900 = 25633^2 + 18130^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 985747589 - 2⁴ = 985747573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985747519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492873794 + 492873795.

It is an arithmetic number, because the mean of its divisors is an integer number (492873795).

Almost surely, 2^985747589 is an apocalyptic number.

It is an amenable number.

985747589 is a deficient number, since it is larger than the sum of its proper divisors (1).

985747589 is an equidigital number, since it uses as much as digits as its factorization.

985747589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25401600, while the sum is 62.

The square root of 985747589 is about 31396.6174770468. The cubic root of 985747589 is about 995.2264457714.

The spelling of 985747589 in words is "nine hundred eighty-five million, seven hundred forty-seven thousand, five hundred eighty-nine".