1090044 has 24 divisors (see below), whose sum is σ = 2826320. Its totient is φ = 363312.

The previous prime is 1090031. The next prime is 1090097. The reversal of 1090044 is 4400901.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 1089999 and 1090026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4939 + ... + 5154.

2^1090044 is an apocalyptic number.

It is an amenable number.

1090044 is an abundant number, since it is smaller than the sum of its proper divisors (1736276).

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

1090044 is a wasteful number, since it uses less digits than its factorization.

1090044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106 (or 10098 counting only the distinct ones).

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

The square root of 1090044 is about 1044.0517228567. The cubic root of 1090044 is about 102.9156314174.

Subtracting from 1090044 its sum of digits (18), we obtain a triangular number (1090026 = T₁₄₇₆).

Adding to 1090044 its reverse (4400901), we get a palindrome (5490945).

The spelling of 1090044 in words is "one million, ninety thousand, forty-four".