1140044443 has 4 divisors (see below), whose sum is σ = 1140178480. Its totient is φ = 1139910408.

The previous prime is 1140044419. The next prime is 1140044459. The reversal of 1140044443 is 3444400411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1140044443 - 2¹³ = 1140036251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140048443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53328 + ... + 71581.

It is an arithmetic number, because the mean of its divisors is an integer number (285044620).

Almost surely, 2^1140044443 is an apocalyptic number.

1140044443 is a deficient number, since it is larger than the sum of its proper divisors (134037).

1140044443 is an equidigital number, since it uses as much as digits as its factorization.

1140044443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134036.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1140044443 is about 33764.5441698833. The cubic root of 1140044443 is about 1044.6575018243.

Adding to 1140044443 its reverse (3444400411), we get a palindrome (4584444854).

The spelling of 1140044443 in words is "one billion, one hundred forty million, forty-four thousand, four hundred forty-three".