110089981 has 2 divisors, whose sum is σ = 110089982. Its totient is φ = 110089980.

The previous prime is 110089927. The next prime is 110089997. The reversal of 110089981 is 189980011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110061081 + 28900 = 10491^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 110089981 - 2¹¹ = 110087933 is a prime.

It is a super-2 number, since 2×110089981² = 24239607833160722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 110089981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110089901) 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, 55044990 + 55044991.

It is an arithmetic number, because the mean of its divisors is an integer number (55044991).

Almost surely, 2^110089981 is an apocalyptic number.

It is an amenable number.

110089981 is a deficient number, since it is larger than the sum of its proper divisors (1).

110089981 is an equidigital number, since it uses as much as digits as its factorization.

110089981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 110089981 is about 10492.3772806738. The cubic root of 110089981 is about 479.2725975989.

The spelling of 110089981 in words is "one hundred ten million, eighty-nine thousand, nine hundred eighty-one".