9978079 has 2 divisors, whose sum is σ = 9978080. Its totient is φ = 9978078.

The previous prime is 9978041. The next prime is 9978103. The reversal of 9978079 is 9708799.

9978079 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (9708799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9978079 - 2⁷ = 9977951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9978179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4989039 + 4989040.

It is an arithmetic number, because the mean of its divisors is an integer number (4989040).

Almost surely, 2^9978079 is an apocalyptic number.

9978079 is a deficient number, since it is larger than the sum of its proper divisors (1).

9978079 is an equidigital number, since it uses as much as digits as its factorization.

9978079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 49.

The square root of 9978079 is about 3158.8097441916. The cubic root of 9978079 is about 215.2859292900.

The spelling of 9978079 in words is "nine million, nine hundred seventy-eight thousand, seventy-nine".