4979878847 has 2 divisors, whose sum is σ = 4979878848. Its totient is φ = 4979878846.

The previous prime is 4979878789. The next prime is 4979878861. The reversal of 4979878847 is 7488789794.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4979878847 - 2¹⁰ = 4979877823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4979874847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489939423 + 2489939424.

It is an arithmetic number, because the mean of its divisors is an integer number (2489939424).

Almost surely, 2^4979878847 is an apocalyptic number.

4979878847 is a deficient number, since it is larger than the sum of its proper divisors (1).

4979878847 is an equidigital number, since it uses as much as digits as its factorization.

4979878847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 227598336, while the sum is 71.

The square root of 4979878847 is about 70568.2566526905. The cubic root of 4979878847 is about 1707.6790837038.

The spelling of 4979878847 in words is "four billion, nine hundred seventy-nine million, eight hundred seventy-eight thousand, eight hundred forty-seven".