6397444033 has 2 divisors, whose sum is σ = 6397444034. Its totient is φ = 6397444032.

The previous prime is 6397443989. The next prime is 6397444091. The reversal of 6397444033 is 3304447936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5819858944 + 577585089 = 76288^2 + 24033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6397444033 is a prime.

It is not a weakly prime, because it can be changed into another prime (6397442033) 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, 3198722016 + 3198722017.

It is an arithmetic number, because the mean of its divisors is an integer number (3198722017).

Almost surely, 2^6397444033 is an apocalyptic number.

It is an amenable number.

6397444033 is a deficient number, since it is larger than the sum of its proper divisors (1).

6397444033 is an equidigital number, since it uses as much as digits as its factorization.

6397444033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 43.

The square root of 6397444033 is about 79984.0236109687. The cubic root of 6397444033 is about 1856.3883391206.

The spelling of 6397444033 in words is "six billion, three hundred ninety-seven million, four hundred forty-four thousand, thirty-three".