1144444405 has 8 divisors (see below), whose sum is σ = 1478974392. Its totient is φ = 845128128.

The previous prime is 1144444397. The next prime is 1144444459. The reversal of 1144444405 is 5044444411.

It can be written as a sum of positive squares in 4 ways, for example, as 28483569 + 1115960836 = 5337^2 + 33406^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1144444405 - 2³ = 1144444397 is a prime.

It is a super-2 number, since 2×1144444405² = 2619505992271608050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8803354 + ... + 8803483.

It is an arithmetic number, because the mean of its divisors is an integer number (184871799).

Almost surely, 2^1144444405 is an apocalyptic number.

It is an amenable number.

1144444405 is a deficient number, since it is larger than the sum of its proper divisors (334529987).

1144444405 is a wasteful number, since it uses less digits than its factorization.

1144444405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17606855.

The product of its (nonzero) digits is 20480, while the sum is 31.

The square root of 1144444405 is about 33829.6379673209. The cubic root of 1144444405 is about 1045.9997163615. Note that the first 3 decimals are identical.

Adding to 1144444405 its reverse (5044444411), we get a palindrome (6188888816).

The spelling of 1144444405 in words is "one billion, one hundred forty-four million, four hundred forty-four thousand, four hundred five".