412109809 has 4 divisors (see below), whose sum is σ = 412172404. Its totient is φ = 412047216.

The previous prime is 412109779. The next prime is 412109833. The reversal of 412109809 is 908901214.

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 398122209 + 13987600 = 19953^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 412109809 - 2⁷ = 412109681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (412109849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20082 + ... + 35035.

It is an arithmetic number, because the mean of its divisors is an integer number (103043101).

Almost surely, 2^412109809 is an apocalyptic number.

It is an amenable number.

412109809 is a deficient number, since it is larger than the sum of its proper divisors (62595).

412109809 is an equidigital number, since it uses as much as digits as its factorization.

412109809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62594.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 412109809 is about 20300.4879005407. The cubic root of 412109809 is about 744.1679878746.

The spelling of 412109809 in words is "four hundred twelve million, one hundred nine thousand, eight hundred nine".