1223336789 has 2 divisors, whose sum is σ = 1223336790. Its totient is φ = 1223336788.

The previous prime is 1223336767. The next prime is 1223336833. The reversal of 1223336789 is 9876333221.

It is an a-pointer prime, because the next prime (1223336833) can be obtained adding 1223336789 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1195983889 + 27352900 = 34583^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223336789 - 2⁸ = 1223336533 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223336729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611668394 + 611668395.

It is an arithmetic number, because the mean of its divisors is an integer number (611668395).

Almost surely, 2^1223336789 is an apocalyptic number.

It is an amenable number.

1223336789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223336789 is an equidigital number, since it uses as much as digits as its factorization.

1223336789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 44.

The square root of 1223336789 is about 34976.2317724480. The cubic root of 1223336789 is about 1069.5030122756.

The spelling of 1223336789 in words is "one billion, two hundred twenty-three million, three hundred thirty-six thousand, seven hundred eighty-nine".