9976280689 has 4 divisors (see below), whose sum is σ = 10007751924. Its totient is φ = 9944809456.

The previous prime is 9976280687. The next prime is 9976280719. The reversal of 9976280689 is 9860826799.

It is a happy number.

9976280689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5804154225 + 4172126464 = 76185^2 + 64592^2 .

It is a cyclic number.

It is not a de Polignac number, because 9976280689 - 2¹ = 9976280687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9976280689.

It is not an unprimeable number, because it can be changed into a prime (9976280681) 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 3 ways as a sum of consecutive naturals, for example, 15735142 + ... + 15735775.

It is an arithmetic number, because the mean of its divisors is an integer number (2501937981).

Almost surely, 2^9976280689 is an apocalyptic number.

It is an amenable number.

9976280689 is a deficient number, since it is larger than the sum of its proper divisors (31471235).

9976280689 is a wasteful number, since it uses less digits than its factorization.

9976280689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31471234.

The product of its (nonzero) digits is 23514624, while the sum is 64.

The square root of 9976280689 is about 99881.3330357580. Note that the first 3 decimals coincide. The cubic root of 9976280689 is about 2152.7299512649.

The spelling of 9976280689 in words is "nine billion, nine hundred seventy-six million, two hundred eighty thousand, six hundred eighty-nine".