1089944 has 16 divisors (see below), whose sum is σ = 2094120. Its totient is φ = 531520.

The previous prime is 1089943. The next prime is 1089961. The reversal of 1089944 is 4499801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089941) 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, 1334 + ... + 1989.

2^1089944 is an apocalyptic number.

It is an amenable number.

1089944 is a deficient number, since it is larger than the sum of its proper divisors (1004176).

1089944 is a wasteful number, since it uses less digits than its factorization.

1089944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370 (or 3366 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1089944 is about 1044.0038314106. The cubic root of 1089944 is about 102.9124841812.

The spelling of 1089944 in words is "one million, eighty-nine thousand, nine hundred forty-four".