1444456491 has 8 divisors (see below), whose sum is σ = 1927297344. Its totient is φ = 962293320.

The previous prime is 1444456463. The next prime is 1444456529. The reversal of 1444456491 is 1946544441.

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

It is not a de Polignac number, because 1444456491 - 2⁶ = 1444456427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1444456291) 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, 164425 + ... + 172986.

It is an arithmetic number, because the mean of its divisors is an integer number (240912168).

Almost surely, 2^1444456491 is an apocalyptic number.

1444456491 is a deficient number, since it is larger than the sum of its proper divisors (482840853).

1444456491 is a wasteful number, since it uses less digits than its factorization.

1444456491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338841.

The product of its digits is 276480, while the sum is 42.

The square root of 1444456491 is about 38006.0059858965. The cubic root of 1444456491 is about 1130.4069568229.

The spelling of 1444456491 in words is "one billion, four hundred forty-four million, four hundred fifty-six thousand, four hundred ninety-one".