1224439 has 2 divisors, whose sum is σ = 1224440. Its totient is φ = 1224438.

The previous prime is 1224437. The next prime is 1224473. The reversal of 1224439 is 9344221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1224439 - 2¹ = 1224437 is a prime.

Together with 1224437, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612219 + 612220.

It is an arithmetic number, because the mean of its divisors is an integer number (612220).

2^1224439 is an apocalyptic number.

1224439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224439 is an equidigital number, since it uses as much as digits as its factorization.

1224439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 1224439 is about 1106.5437180699. The cubic root of 1224439 is about 106.9824118760.

The spelling of 1224439 in words is "one million, two hundred twenty-four thousand, four hundred thirty-nine".