9678979 has 2 divisors, whose sum is σ = 9678980. Its totient is φ = 9678978.

The previous prime is 9678973. The next prime is 9679003. The reversal of 9678979 is 9798769.

It is a weak prime.

It is an emirp because it is prime and its reverse (9798769) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9678979 - 2³ = 9678971 is a prime.

It is not a weakly prime, because it can be changed into another prime (9678971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4839489 + 4839490.

It is an arithmetic number, because the mean of its divisors is an integer number (4839490).

Almost surely, 2^9678979 is an apocalyptic number.

9678979 is a deficient number, since it is larger than the sum of its proper divisors (1).

9678979 is an equidigital number, since it uses as much as digits as its factorization.

9678979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 55.

The square root of 9678979 is about 3111.1057519795. The cubic root of 9678979 is about 213.1129541155.

The spelling of 9678979 in words is "nine million, six hundred seventy-eight thousand, nine hundred seventy-nine".