1099044 has 18 divisors (see below), whose sum is σ = 2778230. Its totient is φ = 366336.

The previous prime is 1099031. The next prime is 1099051. The reversal of 1099044 is 4409901.

It can be written as a sum of positive squares in only one way, i.e., 580644 + 518400 = 762^2 + 720^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 1098999 and 1099017.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 15229 + ... + 15300.

2^1099044 is an apocalyptic number.

It is an amenable number.

1099044 is an abundant number, since it is smaller than the sum of its proper divisors (1679186).

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

1099044 is a wasteful number, since it uses less digits than its factorization.

1099044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30539 (or 30534 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1099044 is about 1048.3529939863. The cubic root of 1099044 is about 103.1980980360.

The spelling of 1099044 in words is "one million, ninety-nine thousand, forty-four".