1224004009 has 2 divisors, whose sum is σ = 1224004010. Its totient is φ = 1224004008.

The previous prime is 1224003943. The next prime is 1224004013. The reversal of 1224004009 is 9004004221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 988473600 + 235530409 = 31440^2 + 15347^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224004009 - 2²¹ = 1221906857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1224007009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612002004 + 612002005.

It is an arithmetic number, because the mean of its divisors is an integer number (612002005).

Almost surely, 2^1224004009 is an apocalyptic number.

It is an amenable number.

1224004009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224004009 is an equidigital number, since it uses as much as digits as its factorization.

1224004009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1224004009 is about 34985.7686638439. The cubic root of 1224004009 is about 1069.6974161149.

The spelling of 1224004009 in words is "one billion, two hundred twenty-four million, four thousand, nine".