9986023444489 has 9 divisors (see below), whose sum is σ = 10030929092391. Its totient is φ = 9941317976640.

The previous prime is 9986023444483. The next prime is 9986023444531. The reversal of 9986023444489 is 9844443206899.

The square root of 9986023444489 is 3160067.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5922735066889 + 4063288377600 = 2433667^2 + 2015760^2 .

It is not a de Polignac number, because 9986023444489 - 2³⁷ = 9848584491017 is a prime.

It is a super-2 number, since 2×9986023444489² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9986023444483) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 717328249 + ... + 717342169.

Almost surely, 2^{9986023444489} is an apocalyptic number.

9986023444489 is the 3160067-th square number.

9986023444489 is the 1580034-th centered octagonal number.

It is an amenable number.

9986023444489 is a deficient number, since it is larger than the sum of its proper divisors (44905647902).

9986023444489 is an frugal number, since it uses more digits than its factorization.

9986023444489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28296 (or 14148 counting only the distinct ones).

The product of its (nonzero) digits is 429981696, while the sum is 70.

The spelling of 9986023444489 in words is "nine trillion, nine hundred eighty-six billion, twenty-three million, four hundred forty-four thousand, four hundred eighty-nine".