11806859 has 4 divisors (see below), whose sum is σ = 11852016. Its totient is φ = 11761704.

The previous prime is 11806853. The next prime is 11806867. The reversal of 11806859 is 95860811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95860811 = 397 ⋅241463.

It is a cyclic number.

It is not a de Polignac number, because 11806859 - 2²⁰ = 10758283 is a prime.

It is a super-3 number, since 3×11806859³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11806853) 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, 22184 + ... + 22709.

It is an arithmetic number, because the mean of its divisors is an integer number (2963004).

Almost surely, 2^11806859 is an apocalyptic number.

11806859 is a deficient number, since it is larger than the sum of its proper divisors (45157).

11806859 is an equidigital number, since it uses as much as digits as its factorization.

11806859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45156.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 11806859 is about 3436.1110284739. Note that the first 3 decimals coincide. The cubic root of 11806859 is about 227.7079144234.

The spelling of 11806859 in words is "eleven million, eight hundred six thousand, eight hundred fifty-nine".