1224442993 has 2 divisors, whose sum is σ = 1224442994. Its totient is φ = 1224442992.

The previous prime is 1224442987. The next prime is 1224443039. The reversal of 1224442993 is 3992444221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 874266624 + 350176369 = 29568^2 + 18713^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224442993 - 2⁹ = 1224442481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1224442903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612221496 + 612221497.

It is an arithmetic number, because the mean of its divisors is an integer number (612221497).

Almost surely, 2^1224442993 is an apocalyptic number.

It is an amenable number.

1224442993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224442993 is an equidigital number, since it uses as much as digits as its factorization.

1224442993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 40.

The square root of 1224442993 is about 34992.0418523984. The cubic root of 1224442993 is about 1069.8252816884.

The spelling of 1224442993 in words is "one billion, two hundred twenty-four million, four hundred forty-two thousand, nine hundred ninety-three".