1224340409 has 2 divisors, whose sum is σ = 1224340410. Its totient is φ = 1224340408.

The previous prime is 1224340399. The next prime is 1224340441. The reversal of 1224340409 is 9040434221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 675844009 + 548496400 = 25997^2 + 23420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224340409 is a prime.

It is a super-2 number, since 2×1224340409² = 2998018874220574562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1224340309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612170204 + 612170205.

It is an arithmetic number, because the mean of its divisors is an integer number (612170205).

Almost surely, 2^1224340409 is an apocalyptic number.

It is an amenable number.

1224340409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224340409 is an equidigital number, since it uses as much as digits as its factorization.

1224340409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1224340409 is about 34990.5760026896. The cubic root of 1224340409 is about 1069.7954041517.

The spelling of 1224340409 in words is "one billion, two hundred twenty-four million, three hundred forty thousand, four hundred nine".