8978331799 has 2 divisors, whose sum is σ = 8978331800. Its totient is φ = 8978331798.

The previous prime is 8978331797. The next prime is 8978331863. The reversal of 8978331799 is 9971338798.

8978331799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (8978331863) can be obtained adding 8978331799 to its sum of digits (64).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8978331799 - 2¹ = 8978331797 is a prime.

It is a super-2 number, since 2×8978331799² (a number of 21 digits) contains 22 as substring.

Together with 8978331797, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8978331799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8978331793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4489165899 + 4489165900.

It is an arithmetic number, because the mean of its divisors is an integer number (4489165900).

Almost surely, 2^8978331799 is an apocalyptic number.

8978331799 is a deficient number, since it is larger than the sum of its proper divisors (1).

8978331799 is an equidigital number, since it uses as much as digits as its factorization.

8978331799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20575296, while the sum is 64.

The square root of 8978331799 is about 94754.0595383649. The cubic root of 8978331799 is about 2078.4131603104.

The spelling of 8978331799 in words is "eight billion, nine hundred seventy-eight million, three hundred thirty-one thousand, seven hundred ninety-nine".