112788209 has 2 divisors, whose sum is σ = 112788210. Its totient is φ = 112788208.

The previous prime is 112788197. The next prime is 112788223. The reversal of 112788209 is 902887211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106028209 + 6760000 = 10297^2 + 2600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112788209 is a prime.

It is a Chen prime.

It is equal to p_6453677 and since 112788209 and 6453677 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (112788289) 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 as a sum of consecutive naturals, namely, 56394104 + 56394105.

It is an arithmetic number, because the mean of its divisors is an integer number (56394105).

Almost surely, 2^112788209 is an apocalyptic number.

It is an amenable number.

112788209 is a deficient number, since it is larger than the sum of its proper divisors (1).

112788209 is an equidigital number, since it uses as much as digits as its factorization.

112788209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 112788209 is about 10620.1793299360. The cubic root of 112788209 is about 483.1565818502.

The spelling of 112788209 in words is "one hundred twelve million, seven hundred eighty-eight thousand, two hundred nine".