112799809 has 4 divisors (see below), whose sum is σ = 113268100. Its totient is φ = 112331520.

The previous prime is 112799807. The next prime is 112799833. The reversal of 112799809 is 908997211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 908997211 = 227 ⋅4004393.

It can be written as a sum of positive squares in 2 ways, for example, as 46621584 + 66178225 = 6828^2 + 8135^2 .

It is a cyclic number.

It is not a de Polignac number, because 112799809 - 2¹ = 112799807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112799807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233784 + ... + 234265.

It is an arithmetic number, because the mean of its divisors is an integer number (28317025).

Almost surely, 2^112799809 is an apocalyptic number.

It is an amenable number.

112799809 is a deficient number, since it is larger than the sum of its proper divisors (468291).

112799809 is an equidigital number, since it uses as much as digits as its factorization.

112799809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468290.

The product of its (nonzero) digits is 81648, while the sum is 46.

The square root of 112799809 is about 10620.7254460324. The cubic root of 112799809 is about 483.1731451189.

The spelling of 112799809 in words is "one hundred twelve million, seven hundred ninety-nine thousand, eight hundred nine".