9656789 has 2 divisors, whose sum is σ = 9656790. Its totient is φ = 9656788.

The previous prime is 9656783. The next prime is 9656819. The reversal of 9656789 is 9876569.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5098564 + 4558225 = 2258^2 + 2135^2 .

It is a cyclic number.

It is not a de Polignac number, because 9656789 - 2¹² = 9652693 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9656783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4828394 + 4828395.

It is an arithmetic number, because the mean of its divisors is an integer number (4828395).

Almost surely, 2^9656789 is an apocalyptic number.

It is an amenable number.

9656789 is a deficient number, since it is larger than the sum of its proper divisors (1).

9656789 is an equidigital number, since it uses as much as digits as its factorization.

9656789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 50.

The square root of 9656789 is about 3107.5374494928. The cubic root of 9656789 is about 212.9499687792.

The spelling of 9656789 in words is "nine million, six hundred fifty-six thousand, seven hundred eighty-nine".