11865841 has 8 divisors (see below), whose sum is σ = 12808040. Its totient is φ = 10927872.

The previous prime is 11865829. The next prime is 11865853. The reversal of 11865841 is 14856811.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11865829) and next prime (11865853).

It can be written as a sum of positive squares in 4 ways, for example, as 1166400 + 10699441 = 1080^2 + 3271^2 .

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 11865841 - 2⁵ = 11865809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11865797 and 11865806.

It is not an unprimeable number, because it can be changed into a prime (11865871) 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 7 ways as a sum of consecutive naturals, for example, 7225 + ... + 8713.

It is an arithmetic number, because the mean of its divisors is an integer number (1601005).

Almost surely, 2^11865841 is an apocalyptic number.

It is an amenable number.

11865841 is a deficient number, since it is larger than the sum of its proper divisors (942199).

11865841 is a wasteful number, since it uses less digits than its factorization.

11865841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115.

The product of its digits is 7680, while the sum is 34.

The square root of 11865841 is about 3444.6830042836. The cubic root of 11865841 is about 228.0864617704.

The spelling of 11865841 in words is "eleven million, eight hundred sixty-five thousand, eight hundred forty-one".