1089844 has 12 divisors (see below), whose sum is σ = 2179744. Its totient is φ = 467064.

The previous prime is 1089841. The next prime is 1089863. The reversal of 1089844 is 4489801.

1089844 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19434 + ... + 19489.

2^1089844 is an apocalyptic number.

1089844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1089844 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1089844 is a wasteful number, since it uses less digits than its factorization.

1089844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38934 (or 38932 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 1089844 is about 1043.9559377675. The cubic root of 1089844 is about 102.9093367524.

The spelling of 1089844 in words is "one million, eighty-nine thousand, eight hundred forty-four".