6471238447 has 2 divisors, whose sum is σ = 6471238448. Its totient is φ = 6471238446.

The previous prime is 6471238441. The next prime is 6471238451. The reversal of 6471238447 is 7448321746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6471238447 - 2¹¹ = 6471236399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6471238397 and 6471238406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6471238441) 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, 3235619223 + 3235619224.

It is an arithmetic number, because the mean of its divisors is an integer number (3235619224).

Almost surely, 2^6471238447 is an apocalyptic number.

6471238447 is a deficient number, since it is larger than the sum of its proper divisors (1).

6471238447 is an equidigital number, since it uses as much as digits as its factorization.

6471238447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 46.

The square root of 6471238447 is about 80444.0081485253. The cubic root of 6471238447 is about 1863.4988720485.

The spelling of 6471238447 in words is "six billion, four hundred seventy-one million, two hundred thirty-eight thousand, four hundred forty-seven".