1444240423 has 8 divisors (see below), whose sum is σ = 1537122528. Its totient is φ = 1352239104.

The previous prime is 1444240417. The next prime is 1444240429. The reversal of 1444240423 is 3240424441.

It is an interprime number because it is at equal distance from previous prime (1444240417) and next prime (1444240429).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444240423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1444240391 and 1444240400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444240429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216811 + ... + 223372.

It is an arithmetic number, because the mean of its divisors is an integer number (192140316).

Almost surely, 2^1444240423 is an apocalyptic number.

1444240423 is a deficient number, since it is larger than the sum of its proper divisors (92882105).

1444240423 is a wasteful number, since it uses less digits than its factorization.

1444240423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440393.

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 1444240423 is about 38003.1633288599. The cubic root of 1444240423 is about 1130.3505903046.

Adding to 1444240423 its reverse (3240424441), we get a palindrome (4684664864).

The spelling of 1444240423 in words is "one billion, four hundred forty-four million, two hundred forty thousand, four hundred twenty-three".