9989273889 has 24 divisors (see below), whose sum is σ = 17100982080. Its totient is φ = 5708155536.

The previous prime is 9989273887. The next prime is 9989273897. The reversal of 9989273889 is 9883729899.

It is not a de Polignac number, because 9989273889 - 2¹ = 9989273887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9989273881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2934594 + ... + 2937995.

It is an arithmetic number, because the mean of its divisors is an integer number (712540920).

Almost surely, 2^9989273889 is an apocalyptic number.

It is an amenable number.

9989273889 is a deficient number, since it is larger than the sum of its proper divisors (7111708191).

9989273889 is an equidigital number, since it uses as much as digits as its factorization.

9989273889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5872611 (or 5872599 counting only the distinct ones).

The product of its digits is 141087744, while the sum is 72.

The square root of 9989273889 is about 99946.3550561000. The cubic root of 9989273889 is about 2153.6641242728.

The spelling of 9989273889 in words is "nine billion, nine hundred eighty-nine million, two hundred seventy-three thousand, eight hundred eighty-nine".