6393975967 has 4 divisors (see below), whose sum is σ = 6394991296. Its totient is φ = 6392960640.

The previous prime is 6393975947. The next prime is 6393975979. The reversal of 6393975967 is 7695793936.

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

It is a cyclic number.

It is not a de Polignac number, because 6393975967 - 2⁷ = 6393975839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6393975899 and 6393975908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6393975947) 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 in 3 ways as a sum of consecutive naturals, for example, 498159 + ... + 510832.

It is an arithmetic number, because the mean of its divisors is an integer number (1598747824).

Almost surely, 2^6393975967 is an apocalyptic number.

6393975967 is a deficient number, since it is larger than the sum of its proper divisors (1015329).

6393975967 is a wasteful number, since it uses less digits than its factorization.

6393975967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015328.

The product of its digits is 57868020, while the sum is 64.

The square root of 6393975967 is about 79962.3409299653. The cubic root of 6393975967 is about 1856.0528279923.

The spelling of 6393975967 in words is "six billion, three hundred ninety-three million, nine hundred seventy-five thousand, nine hundred sixty-seven".