11861843 has 16 divisors (see below), whose sum is σ = 13923840. Its totient is φ = 9896256.

The previous prime is 11861827. The next prime is 11861849. The reversal of 11861843 is 34816811.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11861843 - 2⁴ = 11861827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11861849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70946 + ... + 71112.

It is an arithmetic number, because the mean of its divisors is an integer number (870240).

Almost surely, 2^11861843 is an apocalyptic number.

11861843 is a deficient number, since it is larger than the sum of its proper divisors (2061997).

11861843 is a wasteful number, since it uses less digits than its factorization.

11861843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386.

The product of its digits is 4608, while the sum is 32.

The square root of 11861843 is about 3444.1026407469. The cubic root of 11861843 is about 228.0608422320.

The spelling of 11861843 in words is "eleven million, eight hundred sixty-one thousand, eight hundred forty-three".