2989847849 has 2 divisors, whose sum is σ = 2989847850. Its totient is φ = 2989847848.

The previous prime is 2989847837. The next prime is 2989847897. The reversal of 2989847849 is 9487489892.

2989847849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2708682025 + 281165824 = 52045^2 + 16768^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2989847849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2989847449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1494923924 + 1494923925.

It is an arithmetic number, because the mean of its divisors is an integer number (1494923925).

Almost surely, 2^2989847849 is an apocalyptic number.

It is an amenable number.

2989847849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2989847849 is an equidigital number, since it uses as much as digits as its factorization.

2989847849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83607552, while the sum is 68.

The square root of 2989847849 is about 54679.5011773151. The cubic root of 2989847849 is about 1440.6208499866.

The spelling of 2989847849 in words is "two billion, nine hundred eighty-nine million, eight hundred forty-seven thousand, eight hundred forty-nine".