1223489 has 2 divisors, whose sum is σ = 1223490. Its totient is φ = 1223488.

The previous prime is 1223471. The next prime is 1223491. The reversal of 1223489 is 9843221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 883600 + 339889 = 940^2 + 583^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223489 - 2¹⁶ = 1157953 is a prime.

Together with 1223491, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1223419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611744 + 611745.

It is an arithmetic number, because the mean of its divisors is an integer number (611745).

2^1223489 is an apocalyptic number.

It is an amenable number.

1223489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223489 is an equidigital number, since it uses as much as digits as its factorization.

1223489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 1223489 is about 1106.1143702168. The cubic root of 1223489 is about 106.9547367293.

The spelling of 1223489 in words is "one million, two hundred twenty-three thousand, four hundred eighty-nine".