6344321309 has 4 divisors (see below), whose sum is σ = 6344507004. Its totient is φ = 6344135616.

The previous prime is 6344321267. The next prime is 6344321339. The reversal of 6344321309 is 9031234436.

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 3465676900 + 2878644409 = 58870^2 + 53653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6344321309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6344321339) 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, 25142 + ... + 115415.

It is an arithmetic number, because the mean of its divisors is an integer number (1586126751).

Almost surely, 2^6344321309 is an apocalyptic number.

It is an amenable number.

6344321309 is a deficient number, since it is larger than the sum of its proper divisors (185695).

6344321309 is a wasteful number, since it uses less digits than its factorization.

6344321309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185694.

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 6344321309 is about 79651.2480065441. The cubic root of 6344321309 is about 1851.2357275031.

The spelling of 6344321309 in words is "six billion, three hundred forty-four million, three hundred twenty-one thousand, three hundred nine".