986444689 has 2 divisors, whose sum is σ = 986444690. Its totient is φ = 986444688.

The previous prime is 986444681. The next prime is 986444743.

986444689 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 742835025 + 243609664 = 27255^2 + 15608^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 986444689 - 2³ = 986444681 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (986444681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493222344 + 493222345.

It is an arithmetic number, because the mean of its divisors is an integer number (493222345).

Almost surely, 2^986444689 is an apocalyptic number.

It is an amenable number.

986444689 is a deficient number, since it is larger than the sum of its proper divisors (1).

986444689 is an equidigital number, since it uses as much as digits as its factorization.

986444689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11943936, while the sum is 58.

The square root of 986444689 is about 31407.7170294181. The cubic root of 986444689 is about 995.4609915743.

The spelling of 986444689 in words is "nine hundred eighty-six million, four hundred forty-four thousand, six hundred eighty-nine".