855966347 has 2 divisors, whose sum is σ = 855966348. Its totient is φ = 855966346.

The previous prime is 855966341. The next prime is 855966373. The reversal of 855966347 is 743669558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 855966347 - 2¹² = 855962251 is a prime.

It is not a weakly prime, because it can be changed into another prime (855966341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427983173 + 427983174.

It is an arithmetic number, because the mean of its divisors is an integer number (427983174).

Almost surely, 2^855966347 is an apocalyptic number.

855966347 is a deficient number, since it is larger than the sum of its proper divisors (1).

855966347 is an equidigital number, since it uses as much as digits as its factorization.

855966347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 53.

The square root of 855966347 is about 29256.9025530728. The cubic root of 855966347 is about 949.4794366872.

The spelling of 855966347 in words is "eight hundred fifty-five million, nine hundred sixty-six thousand, three hundred forty-seven".