856193347 has 2 divisors, whose sum is σ = 856193348. Its totient is φ = 856193346.

The previous prime is 856193311. The next prime is 856193369. The reversal of 856193347 is 743391658.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-856193347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 856193297 and 856193306.

It is not a weakly prime, because it can be changed into another prime (856190347) 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, 428096673 + 428096674.

It is an arithmetic number, because the mean of its divisors is an integer number (428096674).

Almost surely, 2^856193347 is an apocalyptic number.

856193347 is a deficient number, since it is larger than the sum of its proper divisors (1).

856193347 is an equidigital number, since it uses as much as digits as its factorization.

856193347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The square root of 856193347 is about 29260.7817222985. The cubic root of 856193347 is about 949.5633624096.

The spelling of 856193347 in words is "eight hundred fifty-six million, one hundred ninety-three thousand, three hundred forty-seven".