989163079 has 2 divisors, whose sum is σ = 989163080. Its totient is φ = 989163078.

The previous prime is 989163031. The next prime is 989163103. The reversal of 989163079 is 970361989.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-989163079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989161079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494581539 + 494581540.

It is an arithmetic number, because the mean of its divisors is an integer number (494581540).

Almost surely, 2^989163079 is an apocalyptic number.

989163079 is a deficient number, since it is larger than the sum of its proper divisors (1).

989163079 is an equidigital number, since it uses as much as digits as its factorization.

989163079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 989163079 is about 31450.9630854128. The cubic root of 989163079 is about 996.3745651058.

The spelling of 989163079 in words is "nine hundred eighty-nine million, one hundred sixty-three thousand, seventy-nine".