6927979 has 2 divisors, whose sum is σ = 6927980. Its totient is φ = 6927978.

The previous prime is 6927971. The next prime is 6927997. The reversal of 6927979 is 9797296.

Together with next prime (6927997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6927979 - 2³ = 6927971 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 6⁶ + 9² + 2²¹ + 7² + 9³ + 7³ + 9⁷ .

It is not a weakly prime, because it can be changed into another prime (6927971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3463989 + 3463990.

It is an arithmetic number, because the mean of its divisors is an integer number (3463990).

Almost surely, 2^6927979 is an apocalyptic number.

6927979 is a deficient number, since it is larger than the sum of its proper divisors (1).

6927979 is an equidigital number, since it uses as much as digits as its factorization.

6927979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 49.

The square root of 6927979 is about 2632.1054310191. The cubic root of 6927979 is about 190.6348019326.

The spelling of 6927979 in words is "six million, nine hundred twenty-seven thousand, nine hundred seventy-nine".