9876667489 has 16 divisors (see below), whose sum is σ = 11271571920. Its totient is φ = 8587837440.

The previous prime is 9876667469. The next prime is 9876667513. The reversal of 9876667489 is 9847666789.

9876667489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 103367889 + 9773299600 = 10167^2 + 98860^2 .

It is a de Polignac number, because none of the positive numbers 2^k-9876667489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9876667439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304032 + ... + 334945.

It is an arithmetic number, because the mean of its divisors is an integer number (704473245).

Almost surely, 2^9876667489 is an apocalyptic number.

It is an amenable number.

9876667489 is a deficient number, since it is larger than the sum of its proper divisors (1394904431).

9876667489 is a wasteful number, since it uses less digits than its factorization.

9876667489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639060.

The product of its digits is 219469824, while the sum is 70.

The square root of 9876667489 is about 99381.4242653022. The cubic root of 9876667489 is about 2145.5409650156.

The spelling of 9876667489 in words is "nine billion, eight hundred seventy-six million, six hundred sixty-seven thousand, four hundred eighty-nine".