4112809 has 8 divisors (see below), whose sum is σ = 4370760. Its totient is φ = 3862656.

The previous prime is 4112807. The next prime is 4112813. The reversal of 4112809 is 9082114.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 883600 + 3229209 = 940^2 + 1797^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4112809 - 2¹ = 4112807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4112807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844 + ... + 2989.

It is an arithmetic number, because the mean of its divisors is an integer number (546345).

Almost surely, 2^4112809 is an apocalyptic number.

It is an amenable number.

4112809 is a deficient number, since it is larger than the sum of its proper divisors (257951).

4112809 is a wasteful number, since it uses less digits than its factorization.

4112809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3899.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 4112809 is about 2028.0061636987. The cubic root of 4112809 is about 160.2185684754.

Subtracting from 4112809 its sum of digits (25), we obtain a square (4112784 = 2028²).

The spelling of 4112809 in words is "four million, one hundred twelve thousand, eight hundred nine".