6479738669 has 2 divisors, whose sum is σ = 6479738670. Its totient is φ = 6479738668.

The previous prime is 6479738659. The next prime is 6479738689. The reversal of 6479738669 is 9668379746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4912608100 + 1567130569 = 70090^2 + 39587^2 .

It is a cyclic number.

It is not a de Polignac number, because 6479738669 - 2⁴ = 6479738653 is a prime.

It is a super-2 number, since 2×6479738669² = 83974026437067783122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6479738609) 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 as a sum of consecutive naturals, namely, 3239869334 + 3239869335.

It is an arithmetic number, because the mean of its divisors is an integer number (3239869335).

Almost surely, 2^6479738669 is an apocalyptic number.

It is an amenable number.

6479738669 is a deficient number, since it is larger than the sum of its proper divisors (1).

6479738669 is an equidigital number, since it uses as much as digits as its factorization.

6479738669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82301184, while the sum is 65.

The square root of 6479738669 is about 80496.8239684026. The cubic root of 6479738669 is about 1864.3144410077.

The spelling of 6479738669 in words is "six billion, four hundred seventy-nine million, seven hundred thirty-eight thousand, six hundred sixty-nine".