84354223 has 2 divisors, whose sum is σ = 84354224. Its totient is φ = 84354222.

The previous prime is 84354209. The next prime is 84354227. The reversal of 84354223 is 32245348.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84354223 is a prime.

It is equal to p_4908406 and since 84354223 and 4908406 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84354227) 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, 42177111 + 42177112.

It is an arithmetic number, because the mean of its divisors is an integer number (42177112).

Almost surely, 2^84354223 is an apocalyptic number.

84354223 is a deficient number, since it is larger than the sum of its proper divisors (1).

84354223 is an equidigital number, since it uses as much as digits as its factorization.

84354223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 31.

The square root of 84354223 is about 9184.4555091742. The cubic root of 84354223 is about 438.5666564037.

The spelling of 84354223 in words is "eighty-four million, three hundred fifty-four thousand, two hundred twenty-three".