112489409 has 4 divisors (see below), whose sum is σ = 112534404. Its totient is φ = 112444416.

The previous prime is 112489381. The next prime is 112489453. The reversal of 112489409 is 904984211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 904984211 = 653 ⋅1385887.

It can be written as a sum of positive squares in 2 ways, for example, as 83631025 + 28858384 = 9145^2 + 5372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112489409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112489469) 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, 18512 + ... + 23825.

It is an arithmetic number, because the mean of its divisors is an integer number (28133601).

Almost surely, 2^112489409 is an apocalyptic number.

It is an amenable number.

112489409 is a deficient number, since it is larger than the sum of its proper divisors (44995).

112489409 is an equidigital number, since it uses as much as digits as its factorization.

112489409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44994.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 112489409 is about 10606.1024415192. The cubic root of 112489409 is about 482.7295429414.

The spelling of 112489409 in words is "one hundred twelve million, four hundred eighty-nine thousand, four hundred nine".