1444321329 has 16 divisors (see below), whose sum is σ = 2108596224. Its totient is φ = 872110800.

The previous prime is 1444321303. The next prime is 1444321369. The reversal of 1444321329 is 9231234441.

It is not a de Polignac number, because 1444321329 - 2⁷ = 1444321201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 1444321329.

It is not an unprimeable number, because it can be changed into a prime (1444321369) 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 15 ways as a sum of consecutive naturals, for example, 71809 + ... + 89694.

It is an arithmetic number, because the mean of its divisors is an integer number (131787264).

Almost surely, 2^1444321329 is an apocalyptic number.

It is an amenable number.

1444321329 is a deficient number, since it is larger than the sum of its proper divisors (664274895).

1444321329 is a wasteful number, since it uses less digits than its factorization.

1444321329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161788.

The product of its digits is 20736, while the sum is 33.

The square root of 1444321329 is about 38004.2277779723. The cubic root of 1444321329 is about 1130.3716972329.

The spelling of 1444321329 in words is "one billion, four hundred forty-four million, three hundred twenty-one thousand, three hundred twenty-nine".