1091044 has 6 divisors (see below), whose sum is σ = 1909334. Its totient is φ = 545520.

The previous prime is 1091033. The next prime is 1091047. The reversal of 1091044 is 4401901.

It can be written as a sum of positive squares in only one way, i.e., 788544 + 302500 = 888^2 + 550^2 .

It is not an unprimeable number, because it can be changed into a prime (1091047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136377 + ... + 136384.

2^1091044 is an apocalyptic number.

It is an amenable number.

1091044 is a deficient number, since it is larger than the sum of its proper divisors (818290).

1091044 is a wasteful number, since it uses less digits than its factorization.

1091044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272765 (or 272763 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1091044 is about 1044.5305165480. The cubic root of 1091044 is about 102.9470931981.

Adding to 1091044 its reverse (4401901), we get a palindrome (5492945).

The spelling of 1091044 in words is "one million, ninety-one thousand, forty-four".