1444423321 has 8 divisors (see below), whose sum is σ = 1591337088. Its totient is φ = 1300110000.

The previous prime is 1444423313. The next prime is 1444423327. The reversal of 1444423321 is 1233244441.

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 1444423321 - 2³ = 1444423313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1444423321.

It is not an unprimeable number, because it can be changed into a prime (1444423327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648945 + ... + 651166.

It is an arithmetic number, because the mean of its divisors is an integer number (198917136).

Almost surely, 2^1444423321 is an apocalyptic number.

1444423321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1444423321 is a deficient number, since it is larger than the sum of its proper divisors (146913767).

1444423321 is a wasteful number, since it uses less digits than its factorization.

1444423321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300223.

The product of its digits is 9216, while the sum is 28.

The square root of 1444423321 is about 38005.5696049934. The cubic root of 1444423321 is about 1130.3983039984.

Adding to 1444423321 its reverse (1233244441), we get a palindrome (2677667762).

The spelling of 1444423321 in words is "one billion, four hundred forty-four million, four hundred twenty-three thousand, three hundred twenty-one".