9873979 has 2 divisors, whose sum is σ = 9873980. Its totient is φ = 9873978.

The previous prime is 9873971. The next prime is 9874003. The reversal of 9873979 is 9793789.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9873979 - 2³ = 9873971 is a prime.

It is a super-2 number, since 2×9873979² = 194990922584882, which contains 22 as substring.

9873979 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9873971) 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, 4936989 + 4936990.

It is an arithmetic number, because the mean of its divisors is an integer number (4936990).

Almost surely, 2^9873979 is an apocalyptic number.

9873979 is a deficient number, since it is larger than the sum of its proper divisors (1).

9873979 is an equidigital number, since it uses as much as digits as its factorization.

9873979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 52.

The square root of 9873979 is about 3142.2888154974. The cubic root of 9873979 is about 214.5346270913.

The spelling of 9873979 in words is "nine million, eight hundred seventy-three thousand, nine hundred seventy-nine".