11947844 has 12 divisors (see below), whose sum is σ = 20943468. Its totient is φ = 5964000.

The previous prime is 11947811. The next prime is 11947847. The reversal of 11947844 is 44874911.

11947844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11022400 + 925444 = 3320^2 + 962^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11947798 and 11947807.

It is not an unprimeable number, because it can be changed into a prime (11947847) 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, 674 + ... + 4934.

It is an arithmetic number, because the mean of its divisors is an integer number (1745289).

Almost surely, 2^11947844 is an apocalyptic number.

It is an amenable number.

11947844 is a deficient number, since it is larger than the sum of its proper divisors (8995624).

11947844 is a wasteful number, since it uses less digits than its factorization.

11947844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4966 (or 4964 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 11947844 is about 3456.5653472776. The cubic root of 11947844 is about 228.6106794945.

The spelling of 11947844 in words is "eleven million, nine hundred forty-seven thousand, eight hundred forty-four".