989170933 has 2 divisors, whose sum is σ = 989170934. Its totient is φ = 989170932.

The previous prime is 989170907. The next prime is 989170939. The reversal of 989170933 is 339071989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 983010609 + 6160324 = 31353^2 + 2482^2 .

It is an emirp because it is prime and its reverse (339071989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989170933 - 2⁵ = 989170901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989170939) 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, 494585466 + 494585467.

It is an arithmetic number, because the mean of its divisors is an integer number (494585467).

Almost surely, 2^989170933 is an apocalyptic number.

It is an amenable number.

989170933 is a deficient number, since it is larger than the sum of its proper divisors (1).

989170933 is an equidigital number, since it uses as much as digits as its factorization.

989170933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 989170933 is about 31451.0879462062. The cubic root of 989170933 is about 996.3772021853.

The spelling of 989170933 in words is "nine hundred eighty-nine million, one hundred seventy thousand, nine hundred thirty-three".