110989 has 2 divisors, whose sum is σ = 110990. Its totient is φ = 110988.

The previous prime is 110977. The next prime is 111029. The reversal of 110989 is 989011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110889 + 100 = 333^2 + 10^2 .

It is an emirp because it is prime and its reverse (989011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110989 - 2⁹ = 110477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55494 + 55495.

It is an arithmetic number, because the mean of its divisors is an integer number (55495).

2¹¹⁰⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

110989 is a deficient number, since it is larger than the sum of its proper divisors (1).

110989 is an equidigital number, since it uses as much as digits as its factorization.

110989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 110989 is about 333.1501163140. The cubic root of 110989 is about 48.0573677516.

The spelling of 110989 in words is "one hundred ten thousand, nine hundred eighty-nine".