1223489394847 has 2 divisors, whose sum is σ = 1223489394848. Its totient is φ = 1223489394846.

The previous prime is 1223489394763. The next prime is 1223489394857. The reversal of 1223489394847 is 7484939843221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223489394847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223489394857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611744697423 + 611744697424.

It is an arithmetic number, because the mean of its divisors is an integer number (611744697424).

Almost surely, 2^{1223489394847} is an apocalyptic number.

1223489394847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223489394847 is an equidigital number, since it uses as much as digits as its factorization.

1223489394847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 83607552, while the sum is 64.

The spelling of 1223489394847 in words is "one trillion, two hundred twenty-three billion, four hundred eighty-nine million, three hundred ninety-four thousand, eight hundred forty-seven".