6904979 has 2 divisors, whose sum is σ = 6904980. Its totient is φ = 6904978.

The previous prime is 6904973. The next prime is 6904981. The reversal of 6904979 is 9794096.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6904979 is a prime.

Together with 6904981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6904973) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3452489 + 3452490.

It is an arithmetic number, because the mean of its divisors is an integer number (3452490).

Almost surely, 2^6904979 is an apocalyptic number.

6904979 is a deficient number, since it is larger than the sum of its proper divisors (1).

6904979 is an equidigital number, since it uses as much as digits as its factorization.

6904979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 6904979 is about 2627.7326728570. The cubic root of 6904979 is about 190.4236070316.

The spelling of 6904979 in words is "six million, nine hundred four thousand, nine hundred seventy-nine".