1444664441 has 4 divisors (see below), whose sum is σ = 1575997584. Its totient is φ = 1313331300.

The previous prime is 1444664393. The next prime is 1444664453.

1444664441 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1444664441 - 2²² = 1440470137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1444664395 and 1444664404.

It is not an unprimeable number, because it can be changed into a prime (1444694441) 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, 65666555 + ... + 65666576.

It is an arithmetic number, because the mean of its divisors is an integer number (393999396).

Almost surely, 2^1444664441 is an apocalyptic number.

1444664441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1444664441 is a deficient number, since it is larger than the sum of its proper divisors (131333143).

1444664441 is a wasteful number, since it uses less digits than its factorization.

1444664441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131333142.

The product of its digits is 147456, while the sum is 38.

The square root of 1444664441 is about 38008.7416392598. The cubic root of 1444664441 is about 1130.4612002583.

It can be divided in two parts, 14446 and 64441, that added together give a palindrome (78887).

The spelling of 1444664441 in words is "one billion, four hundred forty-four million, six hundred sixty-four thousand, four hundred forty-one".