1444443421 has 8 divisors (see below), whose sum is σ = 1455552000. Its totient is φ = 1433372160.

The previous prime is 1444443373. The next prime is 1444443431. The reversal of 1444443421 is 1243444441.

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

It is a cyclic number.

It is not a de Polignac number, because 1444443421 - 2⁷ = 1444443293 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 (1444443431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71005 + ... + 89053.

It is an arithmetic number, because the mean of its divisors is an integer number (181944000).

Almost surely, 2^1444443421 is an apocalyptic number.

It is an amenable number.

1444443421 is a deficient number, since it is larger than the sum of its proper divisors (11108579).

1444443421 is a wasteful number, since it uses less digits than its factorization.

1444443421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18659.

The product of its digits is 24576, while the sum is 31.

The square root of 1444443421 is about 38005.8340389999. The cubic root of 1444443421 is about 1130.4035473598.

Adding to 1444443421 its reverse (1243444441), we get a palindrome (2687887862).

The spelling of 1444443421 in words is "one billion, four hundred forty-four million, four hundred forty-three thousand, four hundred twenty-one".