11111444 has 12 divisors (see below), whose sum is σ = 19558644. Its totient is φ = 5523264.

The previous prime is 11111431. The next prime is 11111491. The reversal of 11111444 is 44411111.

It can be written as a sum of positive squares in 2 ways, for example, as 7907344 + 3204100 = 2812^2 + 1790^2 .

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7337 + ... + 8720.

It is an arithmetic number, because the mean of its divisors is an integer number (1629887).

Almost surely, 2^11111444 is an apocalyptic number.

It is an amenable number.

11111444 is a deficient number, since it is larger than the sum of its proper divisors (8447200).

11111444 is a wasteful number, since it uses less digits than its factorization.

11111444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16234 (or 16232 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

The square root of 11111444 is about 3333.3832662927. The cubic root of 11111444 is about 223.1465451397.

Adding to 11111444 its reverse (44411111), we get a palindrome (55522555).

The spelling of 11111444 in words is "eleven million, one hundred eleven thousand, four hundred forty-four".