1323889379 has 4 divisors (see below), whose sum is σ = 1366595520. Its totient is φ = 1281183240.

The previous prime is 1323889351. The next prime is 1323889387. The reversal of 1323889379 is 9739883231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1323889379 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 1323889379.

It is not an unprimeable number, because it can be changed into a prime (1323889309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21353024 + ... + 21353085.

It is an arithmetic number, because the mean of its divisors is an integer number (341648880).

Almost surely, 2^1323889379 is an apocalyptic number.

1323889379 is a deficient number, since it is larger than the sum of its proper divisors (42706141).

1323889379 is an equidigital number, since it uses as much as digits as its factorization.

1323889379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42706140.

The product of its digits is 1959552, while the sum is 53.

The square root of 1323889379 is about 36385.2906955544. The cubic root of 1323889379 is about 1098.0376525874.

The spelling of 1323889379 in words is "one billion, three hundred twenty-three million, eight hundred eighty-nine thousand, three hundred seventy-nine".