847222213 has 2 divisors, whose sum is σ = 847222214. Its totient is φ = 847222212.

The previous prime is 847222199. The next prime is 847222247. The reversal of 847222213 is 312222748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 554743809 + 292478404 = 23553^2 + 17102^2 .

It is a cyclic number.

It is not a de Polignac number, because 847222213 - 2⁹ = 847221701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (847222253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423611106 + 423611107.

It is an arithmetic number, because the mean of its divisors is an integer number (423611107).

Almost surely, 2^847222213 is an apocalyptic number.

It is an amenable number.

847222213 is a deficient number, since it is larger than the sum of its proper divisors (1).

847222213 is an equidigital number, since it uses as much as digits as its factorization.

847222213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10752, while the sum is 31.

The square root of 847222213 is about 29107.0818358694. The cubic root of 847222213 is about 946.2352250409.

The spelling of 847222213 in words is "eight hundred forty-seven million, two hundred twenty-two thousand, two hundred thirteen".