6438350339 has 2 divisors, whose sum is σ = 6438350340. Its totient is φ = 6438350338.

The previous prime is 6438350309. The next prime is 6438350441. The reversal of 6438350339 is 9330538346.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6438350339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6438350339.

It is not a weakly prime, because it can be changed into another prime (6438350309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3219175169 + 3219175170.

It is an arithmetic number, because the mean of its divisors is an integer number (3219175170).

Almost surely, 2^6438350339 is an apocalyptic number.

6438350339 is a deficient number, since it is larger than the sum of its proper divisors (1).

6438350339 is an equidigital number, since it uses as much as digits as its factorization.

6438350339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 44.

The square root of 6438350339 is about 80239.3316210947. The cubic root of 6438350339 is about 1860.3366195203.

The spelling of 6438350339 in words is "six billion, four hundred thirty-eight million, three hundred fifty thousand, three hundred thirty-nine".