6856000049 has 2 divisors, whose sum is σ = 6856000050. Its totient is φ = 6856000048.

The previous prime is 6856000009. The next prime is 6856000079. The reversal of 6856000049 is 9400006586.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3596161024 + 3259839025 = 59968^2 + 57095^2 .

It is a cyclic number.

It is not a de Polignac number, because 6856000049 - 2²⁸ = 6587564593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6855999976 and 6856000021.

It is not a weakly prime, because it can be changed into another prime (6856000009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428000024 + 3428000025.

It is an arithmetic number, because the mean of its divisors is an integer number (3428000025).

Almost surely, 2^6856000049 is an apocalyptic number.

It is an amenable number.

6856000049 is a deficient number, since it is larger than the sum of its proper divisors (1).

6856000049 is an equidigital number, since it uses as much as digits as its factorization.

6856000049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 6856000049 is about 82800.9664738281. The cubic root of 6856000049 is about 1899.7229558196.

The spelling of 6856000049 in words is "six billion, eight hundred fifty-six million, forty-nine", and thus it is an aban number.