6444539323 has 2 divisors, whose sum is σ = 6444539324. Its totient is φ = 6444539322.

The previous prime is 6444539291. The next prime is 6444539347. The reversal of 6444539323 is 3239354446.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6444539323 - 2⁵ = 6444539291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6444539323.

It is not a weakly prime, because it can be changed into another prime (6444539363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222269661 + 3222269662.

It is an arithmetic number, because the mean of its divisors is an integer number (3222269662).

Almost surely, 2^6444539323 is an apocalyptic number.

6444539323 is a deficient number, since it is larger than the sum of its proper divisors (1).

6444539323 is an equidigital number, since it uses as much as digits as its factorization.

6444539323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 43.

The square root of 6444539323 is about 80277.8881324117. Note that the first 3 decimals coincide. The cubic root of 6444539323 is about 1860.9325230109.

The spelling of 6444539323 in words is "six billion, four hundred forty-four million, five hundred thirty-nine thousand, three hundred twenty-three".