8440979 has 2 divisors, whose sum is σ = 8440980. Its totient is φ = 8440978.

The previous prime is 8440973. The next prime is 8441009. The reversal of 8440979 is 9790448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8440979 - 2⁴ = 8440963 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8440973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4220489 + 4220490.

It is an arithmetic number, because the mean of its divisors is an integer number (4220490).

Almost surely, 2^8440979 is an apocalyptic number.

8440979 is a deficient number, since it is larger than the sum of its proper divisors (1).

8440979 is an equidigital number, since it uses as much as digits as its factorization.

8440979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 8440979 is about 2905.3362972296. The cubic root of 8440979 is about 203.6092980187.

The spelling of 8440979 in words is "eight million, four hundred forty thousand, nine hundred seventy-nine".