9679 has 2 divisors, whose sum is σ = 9680. Its totient is φ = 9678.

The previous prime is 9677. The next prime is 9689. The reversal of 9679 is 9769.

It is a weak prime.

It is an emirp because it is prime and its reverse (9769) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9679 - 2¹ = 9677 is a prime.

Together with 9677, it forms a pair of twin primes.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 9679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4839 + 4840.

It is an arithmetic number, because the mean of its divisors is an integer number (4840).

2⁹⁶⁷⁹ is an apocalyptic number.

9679 is a deficient number, since it is larger than the sum of its proper divisors (1).

9679 is an equidigital number, since it uses as much as digits as its factorization.

9679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 31.

The square root of 9679 is about 98.3819089061. The cubic root of 9679 is about 21.3113108242.

The spelling of 9679 in words is "nine thousand, six hundred seventy-nine".