11857841 has 4 divisors (see below), whose sum is σ = 12240384. Its totient is φ = 11475300.

The previous prime is 11857837. The next prime is 11857873. The reversal of 11857841 is 14875811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14875811 = 29 ⋅512959.

It is a cyclic number.

It is not a de Polignac number, because 11857841 - 2² = 11857837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11857801) 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, 191225 + ... + 191286.

It is an arithmetic number, because the mean of its divisors is an integer number (3060096).

Almost surely, 2^11857841 is an apocalyptic number.

It is an amenable number.

11857841 is a deficient number, since it is larger than the sum of its proper divisors (382543).

11857841 is an equidigital number, since it uses as much as digits as its factorization.

11857841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382542.

The product of its digits is 8960, while the sum is 35.

The square root of 11857841 is about 3443.5215985964. The cubic root of 11857841 is about 228.0351912952.

The spelling of 11857841 in words is "eleven million, eight hundred fifty-seven thousand, eight hundred forty-one".