4999806979 has 2 divisors, whose sum is σ = 4999806980. Its totient is φ = 4999806978.

The previous prime is 4999806971. The next prime is 4999806997. The reversal of 4999806979 is 9796089994.

Together with next prime (4999806997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4999806979 - 2³ = 4999806971 is a prime.

It is not a weakly prime, because it can be changed into another prime (4999806971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499903489 + 2499903490.

It is an arithmetic number, because the mean of its divisors is an integer number (2499903490).

Almost surely, 2^4999806979 is an apocalyptic number.

4999806979 is a deficient number, since it is larger than the sum of its proper divisors (1).

4999806979 is an equidigital number, since it uses as much as digits as its factorization.

4999806979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79361856, while the sum is 70.

The square root of 4999806979 is about 70709.3132409020. The cubic root of 4999806979 is about 1709.9539423091.

The spelling of 4999806979 in words is "four billion, nine hundred ninety-nine million, eight hundred six thousand, nine hundred seventy-nine".