989161 has 8 divisors (see below), whose sum is σ = 1068480. Its totient is φ = 912912.

The previous prime is 989123. The next prime is 989171. The reversal of 989161 is 161989.

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 989161 - 2⁹ = 988649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75 + ... + 1408.

It is an arithmetic number, because the mean of its divisors is an integer number (133560).

2⁹⁸⁹¹⁶¹ is an apocalyptic number.

It is an amenable number.

989161 is a deficient number, since it is larger than the sum of its proper divisors (79319).

989161 is a wasteful number, since it uses less digits than its factorization.

989161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535.

The product of its digits is 3888, while the sum is 34.

The square root of 989161 is about 994.5657343786. The cubic root of 989161 is about 99.6373867053.

It can be divided in two parts, 9891 and 61, that multiplied together give a triangular number (603351 = T₁₀₉₈).

The spelling of 989161 in words is "nine hundred eighty-nine thousand, one hundred sixty-one".