1444578889 has 8 divisors (see below), whose sum is σ = 1605884672. Its totient is φ = 1290442320.

The previous prime is 1444578869. The next prime is 1444578913. The reversal of 1444578889 is 9888754441.

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 1444578889 - 2¹⁵ = 1444546121 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1444578809) 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, 1791879 + ... + 1792684.

It is an arithmetic number, because the mean of its divisors is an integer number (200735584).

Almost surely, 2^1444578889 is an apocalyptic number.

It is an amenable number.

1444578889 is a deficient number, since it is larger than the sum of its proper divisors (161305783).

1444578889 is a wasteful number, since it uses less digits than its factorization.

1444578889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584607.

The product of its digits is 10321920, while the sum is 58.

The square root of 1444578889 is about 38007.6161972834. The cubic root of 1444578889 is about 1130.4388847819.

The spelling of 1444578889 in words is "one billion, four hundred forty-four million, five hundred seventy-eight thousand, eight hundred eighty-nine".