989716571 has 8 divisors (see below), whose sum is σ = 1022064000. Its totient is φ = 957395520.

The previous prime is 989716549. The next prime is 989716573. The reversal of 989716571 is 175617989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 989716571 - 2¹⁰ = 989715547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989716573) 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 in 7 ways as a sum of consecutive naturals, for example, 94505 + ... + 104453.

It is an arithmetic number, because the mean of its divisors is an integer number (127758000).

Almost surely, 2^989716571 is an apocalyptic number.

989716571 is a deficient number, since it is larger than the sum of its proper divisors (32347429).

989716571 is a wasteful number, since it uses less digits than its factorization.

989716571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13189.

The product of its digits is 952560, while the sum is 53.

The square root of 989716571 is about 31459.7611402248. The cubic root of 989716571 is about 996.5603728633.

The spelling of 989716571 in words is "nine hundred eighty-nine million, seven hundred sixteen thousand, five hundred seventy-one".