6378979 has 2 divisors, whose sum is σ = 6378980. Its totient is φ = 6378978.

The previous prime is 6378973. The next prime is 6378989. The reversal of 6378979 is 9798736.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6378979 - 2⁵ = 6378947 is a prime.

It is not a weakly prime, because it can be changed into another prime (6378973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3189489 + 3189490.

It is an arithmetic number, because the mean of its divisors is an integer number (3189490).

Almost surely, 2^6378979 is an apocalyptic number.

6378979 is a deficient number, since it is larger than the sum of its proper divisors (1).

6378979 is an equidigital number, since it uses as much as digits as its factorization.

6378979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 49.

The square root of 6378979 is about 2525.6640710910. The cubic root of 6378979 is about 185.4600578048.

The spelling of 6378979 in words is "six million, three hundred seventy-eight thousand, nine hundred seventy-nine".