1044400111 has 4 divisors (see below), whose sum is σ = 1044892800. Its totient is φ = 1043907424.

The previous prime is 1044400109. The next prime is 1044400129. The reversal of 1044400111 is 1110044401.

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 1044400111 - 2¹ = 1044400109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044400141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243151 + ... + 247408.

It is an arithmetic number, because the mean of its divisors is an integer number (261223200).

Almost surely, 2^1044400111 is an apocalyptic number.

1044400111 is a deficient number, since it is larger than the sum of its proper divisors (492689).

1044400111 is an equidigital number, since it uses as much as digits as its factorization.

1044400111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492688.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1044400111 is about 32317.1798119824. The cubic root of 1044400111 is about 1014.5862440357.

Adding to 1044400111 its reverse (1110044401), we get a palindrome (2154444512).

The spelling of 1044400111 in words is "one billion, forty-four million, four hundred thousand, one hundred eleven".