6399679147 has 2 divisors, whose sum is σ = 6399679148. Its totient is φ = 6399679146.

The previous prime is 6399679093. The next prime is 6399679151. The reversal of 6399679147 is 7419769936.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6399679147 is a prime.

It is not a weakly prime, because it can be changed into another prime (6399679747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3199839573 + 3199839574.

It is an arithmetic number, because the mean of its divisors is an integer number (3199839574).

Almost surely, 2^6399679147 is an apocalyptic number.

6399679147 is a deficient number, since it is larger than the sum of its proper divisors (1).

6399679147 is an equidigital number, since it uses as much as digits as its factorization.

6399679147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15431472, while the sum is 61.

The square root of 6399679147 is about 79997.9946436159. The cubic root of 6399679147 is about 1856.6045065162.

The spelling of 6399679147 in words is "six billion, three hundred ninety-nine million, six hundred seventy-nine thousand, one hundred forty-seven".