1109984 has 12 divisors (see below), whose sum is σ = 2185344. Its totient is φ = 554976.

The previous prime is 1109951. The next prime is 1109987. The reversal of 1109984 is 4899011.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 34687 = 1109984 / (1 + 1 + 0 + 9 + 9 + 8 + 4).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1109984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109987) 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 as a sum of consecutive naturals, namely, 17312 + ... + 17375.

It is an arithmetic number, because the mean of its divisors is an integer number (182112).

2^1109984 is an apocalyptic number.

It is an amenable number.

1109984 is a deficient number, since it is larger than the sum of its proper divisors (1075360).

1109984 is an equidigital number, since it uses as much as digits as its factorization.

1109984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34697 (or 34689 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1109984 is about 1053.5577819939. The cubic root of 1109984 is about 103.5393830535.

The spelling of 1109984 in words is "one million, one hundred nine thousand, nine hundred eighty-four".