7918223 has 2 divisors, whose sum is σ = 7918224. Its totient is φ = 7918222.

The previous prime is 7918201. The next prime is 7918291. The reversal of 7918223 is 3228197.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7918223 - 2⁶ = 7918159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7918223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7918123) 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, 3959111 + 3959112.

It is an arithmetic number, because the mean of its divisors is an integer number (3959112).

Almost surely, 2^7918223 is an apocalyptic number.

7918223 is a deficient number, since it is larger than the sum of its proper divisors (1).

7918223 is an equidigital number, since it uses as much as digits as its factorization.

7918223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 7918223 is about 2813.9337234555. The cubic root of 7918223 is about 199.3161896818.

It can be divided in two parts, 79182 and 23, that multiplied together give a triangular number (1821186 = T₁₉₀₈).

The spelling of 7918223 in words is "seven million, nine hundred eighteen thousand, two hundred twenty-three".