7873979 has 2 divisors, whose sum is σ = 7873980. Its totient is φ = 7873978.

The previous prime is 7873973. The next prime is 7874011. The reversal of 7873979 is 9793787.

It is a weak prime.

It is an emirp because it is prime and its reverse (9793787) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7873979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7873973) 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, 3936989 + 3936990.

It is an arithmetic number, because the mean of its divisors is an integer number (3936990).

Almost surely, 2^7873979 is an apocalyptic number.

7873979 is a deficient number, since it is larger than the sum of its proper divisors (1).

7873979 is an equidigital number, since it uses as much as digits as its factorization.

7873979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 666792, while the sum is 50.

The square root of 7873979 is about 2806.0611183650. The cubic root of 7873979 is about 198.9442618911.

The spelling of 7873979 in words is "seven million, eight hundred seventy-three thousand, nine hundred seventy-nine".