989828161 has 16 divisors (see below), whose sum is σ = 1242547200. Its totient is φ = 768821328.

The previous prime is 989828153. The next prime is 989828167. The reversal of 989828161 is 161828989.

It is a cyclic number.

It is not a de Polignac number, because 989828161 - 2³ = 989828153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 989828099 and 989828108.

It is not an unprimeable number, because it can be changed into a prime (989828167) 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 in 15 ways as a sum of consecutive naturals, for example, 158731 + ... + 164848.

It is an arithmetic number, because the mean of its divisors is an integer number (77659200).

Almost surely, 2^989828161 is an apocalyptic number.

It is an amenable number.

989828161 is a deficient number, since it is larger than the sum of its proper divisors (252719039).

989828161 is a wasteful number, since it uses less digits than its factorization.

989828161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323628.

The product of its digits is 497664, while the sum is 52.

The square root of 989828161 is about 31461.5346256345. The cubic root of 989828161 is about 996.5978253340.

It can be divided in two parts, 989828 and 161, that added together give a palindrome (989989).

The spelling of 989828161 in words is "nine hundred eighty-nine million, eight hundred twenty-eight thousand, one hundred sixty-one".