11917844 has 12 divisors (see below), whose sum is σ = 20880468. Its totient is φ = 5952000.

The previous prime is 11917819. The next prime is 11917849. The reversal of 11917844 is 44871911.

11917844 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 5856400 + 6061444 = 2420^2 + 2462^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11917849) 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, 5474 + ... + 7334.

It is an arithmetic number, because the mean of its divisors is an integer number (1740039).

Almost surely, 2^11917844 is an apocalyptic number.

It is an amenable number.

11917844 is a deficient number, since it is larger than the sum of its proper divisors (8962624).

11917844 is a wasteful number, since it uses less digits than its factorization.

11917844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3466 (or 3464 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 11917844 is about 3452.2230518899. The cubic root of 11917844 is about 228.4191785949.

The spelling of 11917844 in words is "eleven million, nine hundred seventeen thousand, eight hundred forty-four".