1112789 has 2 divisors, whose sum is σ = 1112790. Its totient is φ = 1112788.

The previous prime is 1112779. The next prime is 1112821. The reversal of 1112789 is 9872111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 819025 + 293764 = 905^2 + 542^2 .

It is an emirp because it is prime and its reverse (9872111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1112789 - 2¹² = 1108693 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556394 + 556395.

It is an arithmetic number, because the mean of its divisors is an integer number (556395).

2^1112789 is an apocalyptic number.

It is an amenable number.

1112789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112789 is an equidigital number, since it uses as much as digits as its factorization.

1112789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 29.

The square root of 1112789 is about 1054.8881457292. Note that the first 3 decimals coincide. The cubic root of 1112789 is about 103.6265265526.

The spelling of 1112789 in words is "one million, one hundred twelve thousand, seven hundred eighty-nine".