112389 has 4 divisors (see below), whose sum is σ = 149856. Its totient is φ = 74924.

The previous prime is 112363. The next prime is 112397. The reversal of 112389 is 983211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 983211 = 3 ⋅327737.

It is a cyclic number.

It is not a de Polignac number, because 112389 - 2⁷ = 112261 is a prime.

It is a D-number.

It is a plaindrome in base 10 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112339) 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, 18729 + ... + 18734.

It is an arithmetic number, because the mean of its divisors is an integer number (37464).

2¹¹²³⁸⁹ is an apocalyptic number.

It is an amenable number.

112389 is a deficient number, since it is larger than the sum of its proper divisors (37467).

112389 is an equidigital number, since it uses as much as digits as its factorization.

112389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37466.

The product of its digits is 432, while the sum is 24.

The square root of 112389 is about 335.2446867588. The cubic root of 112389 is about 48.2585870691.

The spelling of 112389 in words is "one hundred twelve thousand, three hundred eighty-nine".