11445444 has 54 divisors (see below), whose sum is σ = 30294446. Its totient is φ = 3643200.

The previous prime is 11445443. The next prime is 11445449. The reversal of 11445444 is 44454411.

11445444 is a `hidden beast` number, since 114 + 4 + 544 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10969344 + 476100 = 3312^2 + 690^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (11445443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18744 + ... + 19344.

Almost surely, 2^11445444 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 11445444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15147223).

11445444 is an abundant number, since it is smaller than the sum of its proper divisors (18849002).

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

11445444 is a wasteful number, since it uses less digits than its factorization.

11445444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 629 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 11445444 is about 3383.1115855082. Note that the first 3 decimals coincide. The cubic root of 11445444 is about 225.3603706533.

Adding to 11445444 its reverse (44454411), we get a palindrome (55899855).

The spelling of 11445444 in words is "eleven million, four hundred forty-five thousand, four hundred forty-four".