1966844 has 12 divisors (see below), whose sum is σ = 3754968. Its totient is φ = 894000.

The previous prime is 1966843. The next prime is 1966847. The reversal of 1966844 is 4486691.

It is a junction number, because it is equal to n+sod(n) for n = 1966798 and 1966807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22307 + ... + 22394.

It is an arithmetic number, because the mean of its divisors is an integer number (312914).

2^1966844 is an apocalyptic number.

It is an amenable number.

1966844 is a deficient number, since it is larger than the sum of its proper divisors (1788124).

1966844 is a wasteful number, since it uses less digits than its factorization.

1966844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44716 (or 44714 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 1966844 is about 1402.4421556699. The cubic root of 1966844 is about 125.2919894064.

The spelling of 1966844 in words is "one million, nine hundred sixty-six thousand, eight hundred forty-four".