11846809 has 4 divisors (see below), whose sum is σ = 12758116. Its totient is φ = 10935504.

The previous prime is 11846803. The next prime is 11846851. The reversal of 11846809 is 90864811.

It is a happy number.

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 5736025 + 6110784 = 2395^2 + 2472^2 .

It is a cyclic number.

It is not a de Polignac number, because 11846809 - 2⁵ = 11846777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11846803) 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, 455634 + ... + 455659.

It is an arithmetic number, because the mean of its divisors is an integer number (3189529).

Almost surely, 2^11846809 is an apocalyptic number.

It is an amenable number.

11846809 is a deficient number, since it is larger than the sum of its proper divisors (911307).

11846809 is an equidigital number, since it uses as much as digits as its factorization.

11846809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911306.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 11846809 is about 3441.9193773242. The cubic root of 11846809 is about 227.9644514702.

The spelling of 11846809 in words is "eleven million, eight hundred forty-six thousand, eight hundred nine".