111840089 has 2 divisors, whose sum is σ = 111840090. Its totient is φ = 111840088.

The previous prime is 111840031. The next prime is 111840097. The reversal of 111840089 is 980048111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102353689 + 9486400 = 10117^2 + 3080^2 .

It is a cyclic number.

It is not a de Polignac number, because 111840089 - 2¹² = 111835993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111846089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55920044 + 55920045.

It is an arithmetic number, because the mean of its divisors is an integer number (55920045).

Almost surely, 2^111840089 is an apocalyptic number.

It is an amenable number.

111840089 is a deficient number, since it is larger than the sum of its proper divisors (1).

111840089 is an equidigital number, since it uses as much as digits as its factorization.

111840089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 111840089 is about 10575.4474609824. The cubic root of 111840089 is about 481.7989338881.

The spelling of 111840089 in words is "one hundred eleven million, eight hundred forty thousand, eighty-nine".