7989449827 has 2 divisors, whose sum is σ = 7989449828. Its totient is φ = 7989449826.

The previous prime is 7989449803. The next prime is 7989449869. The reversal of 7989449827 is 7289449897.

7989449827 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7989449827 is a prime.

It is not a weakly prime, because it can be changed into another prime (7989449227) 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, 3994724913 + 3994724914.

It is an arithmetic number, because the mean of its divisors is an integer number (3994724914).

Almost surely, 2^7989449827 is an apocalyptic number.

7989449827 is a deficient number, since it is larger than the sum of its proper divisors (1).

7989449827 is an equidigital number, since it uses as much as digits as its factorization.

7989449827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73156608, while the sum is 67.

The square root of 7989449827 is about 89383.7223827694. The cubic root of 7989449827 is about 1999.1204321536.

The spelling of 7989449827 in words is "seven billion, nine hundred eighty-nine million, four hundred forty-nine thousand, eight hundred twenty-seven".