6472839979 has 2 divisors, whose sum is σ = 6472839980. Its totient is φ = 6472839978.

The previous prime is 6472839949. The next prime is 6472840013. The reversal of 6472839979 is 9799382746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6472839979 - 2⁹ = 6472839467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6472839979.

It is not a weakly prime, because it can be changed into another prime (6472839949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3236419989 + 3236419990.

It is an arithmetic number, because the mean of its divisors is an integer number (3236419990).

Almost surely, 2^6472839979 is an apocalyptic number.

6472839979 is a deficient number, since it is larger than the sum of its proper divisors (1).

6472839979 is an equidigital number, since it uses as much as digits as its factorization.

6472839979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41150592, while the sum is 64.

The square root of 6472839979 is about 80453.9618601844. The cubic root of 6472839979 is about 1863.6525884730.

The spelling of 6472839979 in words is "six billion, four hundred seventy-two million, eight hundred thirty-nine thousand, nine hundred seventy-nine".