1144404453 has 24 divisors (see below), whose sum is σ = 1639232640. Its totient is φ = 709941760.

The previous prime is 1144404433. The next prime is 1144404473. The reversal of 1144404453 is 3544044411.

It is an interprime number because it is at equal distance from previous prime (1144404433) and next prime (1144404473).

It is not a de Polignac number, because 1144404453 - 2⁶ = 1144404389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1144404453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144404403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69748 + ... + 84578.

It is an arithmetic number, because the mean of its divisors is an integer number (68301360).

Almost surely, 2^1144404453 is an apocalyptic number.

It is an amenable number.

1144404453 is a deficient number, since it is larger than the sum of its proper divisors (494828187).

1144404453 is a wasteful number, since it uses less digits than its factorization.

1144404453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14957 (or 14940 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

The square root of 1144404453 is about 33829.0474740274. The cubic root of 1144404453 is about 1045.9875444387.

Adding to 1144404453 its reverse (3544044411), we get a palindrome (4688448864).

The spelling of 1144404453 in words is "one billion, one hundred forty-four million, four hundred four thousand, four hundred fifty-three".