8438787113 has 2 divisors, whose sum is σ = 8438787114. Its totient is φ = 8438787112.

The previous prime is 8438787089. The next prime is 8438787139. The reversal of 8438787113 is 3117878348.

It is a happy number.

8438787113 is digitally balanced in base 3, 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., 7629498409 + 809288704 = 87347^2 + 28448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8438787113 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 (8438787613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4219393556 + 4219393557.

It is an arithmetic number, because the mean of its divisors is an integer number (4219393557).

Almost surely, 2^8438787113 is an apocalyptic number.

It is an amenable number.

8438787113 is a deficient number, since it is larger than the sum of its proper divisors (1).

8438787113 is an equidigital number, since it uses as much as digits as its factorization.

8438787113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 50.

The square root of 8438787113 is about 91862.8712429565. The cubic root of 8438787113 is about 2035.9167260629.

The spelling of 8438787113 in words is "eight billion, four hundred thirty-eight million, seven hundred eighty-seven thousand, one hundred thirteen".