8442223 has 2 divisors, whose sum is σ = 8442224. Its totient is φ = 8442222.

The previous prime is 8442221. The next prime is 8442229. The reversal of 8442223 is 3222448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8442223 - 2¹ = 8442221 is a prime.

It is a super-2 number, since 2×8442223² = 142542258363458, which contains 22 as substring.

Together with 8442221, it forms a pair of twin primes.

It is a d-powerful number, because it can be written as 8 + 4 + 4⁵ + 2⁷ + 2¹⁵ + 2²³ + 3⁹ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8442221) 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, 4221111 + 4221112.

It is an arithmetic number, because the mean of its divisors is an integer number (4221112).

Almost surely, 2^8442223 is an apocalyptic number.

8442223 is a deficient number, since it is larger than the sum of its proper divisors (1).

8442223 is an equidigital number, since it uses as much as digits as its factorization.

8442223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 25.

The square root of 8442223 is about 2905.5503781556. The cubic root of 8442223 is about 203.6192999203.

The spelling of 8442223 in words is "eight million, four hundred forty-two thousand, two hundred twenty-three".