1444428859 has 4 divisors (see below), whose sum is σ = 1446995016. Its totient is φ = 1441862704.

The previous prime is 1444428857. The next prime is 1444428877. The reversal of 1444428859 is 9588244441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9588244441 = 60757 ⋅157813.

It is a cyclic number.

It is not a de Polignac number, because 1444428859 - 2¹ = 1444428857 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444428857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282234 + ... + 1283359.

It is an arithmetic number, because the mean of its divisors is an integer number (361748754).

Almost surely, 2^1444428859 is an apocalyptic number.

1444428859 is a deficient number, since it is larger than the sum of its proper divisors (2566157).

1444428859 is an equidigital number, since it uses as much as digits as its factorization.

1444428859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566156.

The product of its digits is 1474560, while the sum is 49.

The square root of 1444428859 is about 38005.6424626660. The cubic root of 1444428859 is about 1130.3997486667.

The spelling of 1444428859 in words is "one billion, four hundred forty-four million, four hundred twenty-eight thousand, eight hundred fifty-nine".