1209223 has 2 divisors, whose sum is σ = 1209224. Its totient is φ = 1209222.

The previous prime is 1209209. The next prime is 1209233. The reversal of 1209223 is 3229021.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3229021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1209223 - 2⁵ = 1209191 is a prime.

1209223 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1209223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1209233) 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, 604611 + 604612.

It is an arithmetic number, because the mean of its divisors is an integer number (604612).

2^1209223 is an apocalyptic number.

1209223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1209223 is an equidigital number, since it uses as much as digits as its factorization.

1209223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1209223 is about 1099.6467614648. The cubic root of 1209223 is about 106.5374096208.

The spelling of 1209223 in words is "one million, two hundred nine thousand, two hundred twenty-three".