4998489871 has 2 divisors, whose sum is σ = 4998489872. Its totient is φ = 4998489870.

The previous prime is 4998489869. The next prime is 4998489887. The reversal of 4998489871 is 1789848994.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4998489871 - 2¹ = 4998489869 is a prime.

Together with 4998489869, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 4998489797 and 4998489806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4998489071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2499244935 + 2499244936.

It is an arithmetic number, because the mean of its divisors is an integer number (2499244936).

Almost surely, 2^4998489871 is an apocalyptic number.

4998489871 is a deficient number, since it is larger than the sum of its proper divisors (1).

4998489871 is an equidigital number, since it uses as much as digits as its factorization.

4998489871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41803776, while the sum is 67.

The square root of 4998489871 is about 70699.9990876945. Note that the first 3 decimals coincide. The cubic root of 4998489871 is about 1709.8037770579.

The spelling of 4998489871 in words is "four billion, nine hundred ninety-eight million, four hundred eighty-nine thousand, eight hundred seventy-one".