112011989 has 4 divisors (see below), whose sum is σ = 112592556. Its totient is φ = 111431424.

The previous prime is 112011979. The next prime is 112012009. The reversal of 112011989 is 989110211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28143025 + 83868964 = 5305^2 + 9158^2 .

It is a cyclic number.

It is not a de Polignac number, because 112011989 - 2¹² = 112007893 is a prime.

It is a super-2 number, since 2×112011989² = 25093371359472242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112011919) 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, 289994 + ... + 290379.

It is an arithmetic number, because the mean of its divisors is an integer number (28148139).

Almost surely, 2^112011989 is an apocalyptic number.

It is an amenable number.

112011989 is a deficient number, since it is larger than the sum of its proper divisors (580567).

112011989 is an equidigital number, since it uses as much as digits as its factorization.

112011989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580566.

The product of its (nonzero) digits is 1296, while the sum is 32.

The square root of 112011989 is about 10583.5716561093. The cubic root of 112011989 is about 482.0456517426.

The spelling of 112011989 in words is "one hundred twelve million, eleven thousand, nine hundred eighty-nine".