1232243489 has 2 divisors, whose sum is σ = 1232243490. Its totient is φ = 1232243488.

The previous prime is 1232243429. The next prime is 1232243491. The reversal of 1232243489 is 9843422321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 887027089 + 345216400 = 29783^2 + 18580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1232243489 is a prime.

Together with 1232243491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1232243429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616121744 + 616121745.

It is an arithmetic number, because the mean of its divisors is an integer number (616121745).

Almost surely, 2^1232243489 is an apocalyptic number.

It is an amenable number.

1232243489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232243489 is an equidigital number, since it uses as much as digits as its factorization.

1232243489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 1232243489 is about 35103.3258965586. The cubic root of 1232243489 is about 1072.0923013200.

The spelling of 1232243489 in words is "one billion, two hundred thirty-two million, two hundred forty-three thousand, four hundred eighty-nine".