1440448453 has 2 divisors, whose sum is σ = 1440448454. Its totient is φ = 1440448452.

The previous prime is 1440448447. The next prime is 1440448487. The reversal of 1440448453 is 3548440441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1012703329 + 427745124 = 31823^2 + 20682^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440448453 - 2⁵ = 1440448421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440448423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720224226 + 720224227.

It is an arithmetic number, because the mean of its divisors is an integer number (720224227).

Almost surely, 2^1440448453 is an apocalyptic number.

It is an amenable number.

1440448453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440448453 is an equidigital number, since it uses as much as digits as its factorization.

1440448453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122880, while the sum is 37.

The square root of 1440448453 is about 37953.2403491454. The cubic root of 1440448453 is about 1129.3604476099.

Adding to 1440448453 its reverse (3548440441), we get a palindrome (4988888894).

The spelling of 1440448453 in words is "one billion, four hundred forty million, four hundred forty-eight thousand, four hundred fifty-three".