989701169 has 2 divisors, whose sum is σ = 989701170. Its totient is φ = 989701168.

The previous prime is 989701157. The next prime is 989701187. The reversal of 989701169 is 961107989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 691690000 + 298011169 = 26300^2 + 17263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-989701169 is a prime.

It is a super-2 number, since 2×989701169² = 1959016807839933122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (989701129) 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, 494850584 + 494850585.

It is an arithmetic number, because the mean of its divisors is an integer number (494850585).

Almost surely, 2^989701169 is an apocalyptic number.

It is an amenable number.

989701169 is a deficient number, since it is larger than the sum of its proper divisors (1).

989701169 is an equidigital number, since it uses as much as digits as its factorization.

989701169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 50.

The square root of 989701169 is about 31459.5163503828. The cubic root of 989701169 is about 996.5552033353. Note that the first 3 decimals are identical.

The spelling of 989701169 in words is "nine hundred eighty-nine million, seven hundred one thousand, one hundred sixty-nine".