989716573 has 2 divisors, whose sum is σ = 989716574. Its totient is φ = 989716572.

The previous prime is 989716549. The next prime is 989716577. The reversal of 989716573 is 375617989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 971755929 + 17960644 = 31173^2 + 4238^2 .

It is a cyclic number.

It is not a de Polignac number, because 989716573 - 2²⁹ = 452845661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989716577) 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, 494858286 + 494858287.

It is an arithmetic number, because the mean of its divisors is an integer number (494858287).

Almost surely, 2^989716573 is an apocalyptic number.

It is an amenable number.

989716573 is a deficient number, since it is larger than the sum of its proper divisors (1).

989716573 is an equidigital number, since it uses as much as digits as its factorization.

989716573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 55.

The square root of 989716573 is about 31459.7611720115. The cubic root of 989716573 is about 996.5603735346.

The spelling of 989716573 in words is "nine hundred eighty-nine million, seven hundred sixteen thousand, five hundred seventy-three".