1323669689 has 4 divisors (see below), whose sum is σ = 1323794724. Its totient is φ = 1323544656.

The previous prime is 1323669679. The next prime is 1323669701. The reversal of 1323669689 is 9869663231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 496532089 + 827137600 = 22283^2 + 28760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323669689 - 2⁴ = 1323669673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1323669689.

It is not an unprimeable number, because it can be changed into a prime (1323669629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45002 + ... + 68355.

It is an arithmetic number, because the mean of its divisors is an integer number (330948681).

Almost surely, 2^1323669689 is an apocalyptic number.

It is an amenable number.

1323669689 is a deficient number, since it is larger than the sum of its proper divisors (125035).

1323669689 is a wasteful number, since it uses less digits than its factorization.

1323669689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125034.

The product of its digits is 2519424, while the sum is 53.

The square root of 1323669689 is about 36382.2716305620. The cubic root of 1323669689 is about 1097.9769120552.

The spelling of 1323669689 in words is "one billion, three hundred twenty-three million, six hundred sixty-nine thousand, six hundred eighty-nine".