8361979 has 2 divisors, whose sum is σ = 8361980. Its totient is φ = 8361978.

The previous prime is 8361967. The next prime is 8362021. The reversal of 8361979 is 9791638.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8361979 - 2⁷ = 8361851 is a prime.

It is not a weakly prime, because it can be changed into another prime (8361179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4180989 + 4180990.

It is an arithmetic number, because the mean of its divisors is an integer number (4180990).

Almost surely, 2^8361979 is an apocalyptic number.

8361979 is a deficient number, since it is larger than the sum of its proper divisors (1).

8361979 is an equidigital number, since it uses as much as digits as its factorization.

8361979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 43.

The square root of 8361979 is about 2891.7086644405. The cubic root of 8361979 is about 202.9721058197.

The spelling of 8361979 in words is "eight million, three hundred sixty-one thousand, nine hundred seventy-nine".