11409444 has 48 divisors (see below), whose sum is σ = 29937600. Its totient is φ = 3757248.

The previous prime is 11409401. The next prime is 11409451. The reversal of 11409444 is 44490411.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9019 + ... + 10205.

It is an arithmetic number, because the mean of its divisors is an integer number (623700).

Almost surely, 2^11409444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11409444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14968800).

11409444 is an abundant number, since it is smaller than the sum of its proper divisors (18528156).

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

11409444 is a wasteful number, since it uses less digits than its factorization.

11409444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289 (or 1281 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 11409444 is about 3377.7868494030. The cubic root of 11409444 is about 225.1238429338.

Adding to 11409444 its reverse (44490411), we get a palindrome (55899855).

The spelling of 11409444 in words is "eleven million, four hundred nine thousand, four hundred forty-four".