1044090 has 40 divisors (see below), whose sum is σ = 2809620. Its totient is φ = 278208.

The previous prime is 1044079. The next prime is 1044091. The reversal of 1044090 is 904401.

It can be written as a sum of positive squares in 2 ways, for example, as 1034289 + 9801 = 1017^2 + 99^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1044091) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 166 + ... + 1454.

2^1044090 is an apocalyptic number.

1044090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1044090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1404810).

1044090 is an abundant number, since it is smaller than the sum of its proper divisors (1765530).

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

1044090 is a wasteful number, since it uses less digits than its factorization.

1044090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1308 (or 1299 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1044090 is about 1021.8072225229. The cubic root of 1044090 is about 101.4485814613.

Adding to 1044090 its reverse (904401), we get a palindrome (1948491).

It can be divided in two parts, 10 and 44090, that added together give a square (44100 = 210²).

The spelling of 1044090 in words is "one million, forty-four thousand, ninety".