6775489447 has 2 divisors, whose sum is σ = 6775489448. Its totient is φ = 6775489446.

The previous prime is 6775489439. The next prime is 6775489507. The reversal of 6775489447 is 7449845776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6775489447 - 2³ = 6775489439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6775484447) 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, 3387744723 + 3387744724.

It is an arithmetic number, because the mean of its divisors is an integer number (3387744724).

Almost surely, 2^6775489447 is an apocalyptic number.

6775489447 is a deficient number, since it is larger than the sum of its proper divisors (1).

6775489447 is an equidigital number, since it uses as much as digits as its factorization.

6775489447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47416320, while the sum is 61.

The square root of 6775489447 is about 82313.3612908621. The cubic root of 6775489447 is about 1892.2574527262.

The spelling of 6775489447 in words is "six billion, seven hundred seventy-five million, four hundred eighty-nine thousand, four hundred forty-seven".