1444604453 has 4 divisors (see below), whose sum is σ = 1450225740. Its totient is φ = 1438983168.

The previous prime is 1444604449. The next prime is 1444604489. The reversal of 1444604453 is 3544064441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3544064441 = 233 ⋅15210577.

It can be written as a sum of positive squares in 2 ways, for example, as 870427009 + 574177444 = 29503^2 + 23962^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444604453 - 2² = 1444604449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444604423) 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, 2810258 + ... + 2810771.

It is an arithmetic number, because the mean of its divisors is an integer number (362556435).

Almost surely, 2^1444604453 is an apocalyptic number.

It is an amenable number.

1444604453 is a deficient number, since it is larger than the sum of its proper divisors (5621287).

1444604453 is an equidigital number, since it uses as much as digits as its factorization.

1444604453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5621286.

The product of its (nonzero) digits is 92160, while the sum is 35.

The square root of 1444604453 is about 38007.9524968131. The cubic root of 1444604453 is about 1130.4455530157.

Adding to 1444604453 its reverse (3544064441), we get a palindrome (4988668894).

The spelling of 1444604453 in words is "one billion, four hundred forty-four million, six hundred four thousand, four hundred fifty-three".