9676784227009 has 3 divisors (see below), whose sum is σ = 9676787337763. Its totient is φ = 9676781116256.

The previous prime is 9676784226959. The next prime is 9676784227039. The reversal of 9676784227009 is 9007224876769.

It is a happy number.

The square root of 9676784227009 is 3110753.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1172141849025 + 8504642377984 = 1082655^2 + 2916272^2 .

It is not a de Polignac number, because 9676784227009 - 2⁷ = 9676784226881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9676784227039) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1555377 + ... + 4666129.

Almost surely, 2^{9676784227009} is an apocalyptic number.

9676784227009 is the 3110753-rd square number.

9676784227009 is the 1555377-th centered octagonal number.

It is an amenable number.

9676784227009 is a deficient number, since it is larger than the sum of its proper divisors (3110754).

9676784227009 is an frugal number, since it uses more digits than its factorization.

9676784227009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6221506 (or 3110753 counting only the distinct ones).

The product of its (nonzero) digits is 128024064, while the sum is 67.

The spelling of 9676784227009 in words is "nine trillion, six hundred seventy-six billion, seven hundred eighty-four million, two hundred twenty-seven thousand, nine".