84218207 has 2 divisors, whose sum is σ = 84218208. Its totient is φ = 84218206.

The previous prime is 84218171. The next prime is 84218243. The reversal of 84218207 is 70281248.

It is a balanced prime because it is at equal distance from previous prime (84218171) and next prime (84218243).

It is a cyclic number.

It is not a de Polignac number, because 84218207 - 2¹² = 84214111 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84218107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42109103 + 42109104.

It is an arithmetic number, because the mean of its divisors is an integer number (42109104).

Almost surely, 2^84218207 is an apocalyptic number.

84218207 is a deficient number, since it is larger than the sum of its proper divisors (1).

84218207 is an equidigital number, since it uses as much as digits as its factorization.

84218207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 84218207 is about 9177.0478368591. The cubic root of 84218207 is about 438.3308090023.

The spelling of 84218207 in words is "eighty-four million, two hundred eighteen thousand, two hundred seven".