1111444443 has 32 divisors (see below), whose sum is σ = 1712614400. Its totient is φ = 711760608.

The previous prime is 1111444429. The next prime is 1111444447. The reversal of 1111444443 is 3444441111.

It is not a de Polignac number, because 1111444443 - 2⁴ = 1111444427 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111444447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71880 + ... + 85962.

It is an arithmetic number, because the mean of its divisors is an integer number (53519200).

Almost surely, 2^1111444443 is an apocalyptic number.

1111444443 is a deficient number, since it is larger than the sum of its proper divisors (601169957).

1111444443 is a wasteful number, since it uses less digits than its factorization.

1111444443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14208 (or 14202 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 1111444443 is about 33338.3329367262. The cubic root of 1111444443 is about 1035.8477322637.

Adding to 1111444443 its reverse (3444441111), we get a palindrome (4555885554).

The spelling of 1111444443 in words is "one billion, one hundred eleven million, four hundred forty-four thousand, four hundred forty-three".