1112223989 has 4 divisors (see below), whose sum is σ = 1112370156. Its totient is φ = 1112077824.

The previous prime is 1112223977. The next prime is 1112223991. The reversal of 1112223989 is 9893222111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9893222111 = 89 ⋅111159799.

It can be written as a sum of positive squares in 2 ways, for example, as 635544100 + 476679889 = 25210^2 + 21833^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112223989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112223289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61004 + ... + 77109.

It is an arithmetic number, because the mean of its divisors is an integer number (278092539).

Almost surely, 2^1112223989 is an apocalyptic number.

It is an amenable number.

1112223989 is a deficient number, since it is larger than the sum of its proper divisors (146167).

1112223989 is an equidigital number, since it uses as much as digits as its factorization.

1112223989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146166.

The product of its digits is 15552, while the sum is 38.

The square root of 1112223989 is about 33350.0223238306. The cubic root of 1112223989 is about 1036.0898503017.

The spelling of 1112223989 in words is "one billion, one hundred twelve million, two hundred twenty-three thousand, nine hundred eighty-nine".