847406317 has 2 divisors, whose sum is σ = 847406318. Its totient is φ = 847406316.

The previous prime is 847406311. The next prime is 847406333. The reversal of 847406317 is 713604748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 446645956 + 400760361 = 21134^2 + 20019^2 .

It is a cyclic number.

It is not a de Polignac number, because 847406317 - 2²⁷ = 713188589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 847406317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (847406311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423703158 + 423703159.

It is an arithmetic number, because the mean of its divisors is an integer number (423703159).

Almost surely, 2^847406317 is an apocalyptic number.

It is an amenable number.

847406317 is a deficient number, since it is larger than the sum of its proper divisors (1).

847406317 is an equidigital number, since it uses as much as digits as its factorization.

847406317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 847406317 is about 29110.2441934107. The cubic root of 847406317 is about 946.3037600212.

The spelling of 847406317 in words is "eight hundred forty-seven million, four hundred six thousand, three hundred seventeen".