6813400079 has 2 divisors, whose sum is σ = 6813400080. Its totient is φ = 6813400078.

The previous prime is 6813400043. The next prime is 6813400091. The reversal of 6813400079 is 9700043186.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6813400079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6813400579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3406700039 + 3406700040.

It is an arithmetic number, because the mean of its divisors is an integer number (3406700040).

Almost surely, 2^6813400079 is an apocalyptic number.

6813400079 is a deficient number, since it is larger than the sum of its proper divisors (1).

6813400079 is an equidigital number, since it uses as much as digits as its factorization.

6813400079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 6813400079 is about 82543.3224373722. The cubic root of 6813400079 is about 1895.7801155887.

The spelling of 6813400079 in words is "six billion, eight hundred thirteen million, four hundred thousand, seventy-nine".