1440448487 has 2 divisors, whose sum is σ = 1440448488. Its totient is φ = 1440448486.

The previous prime is 1440448453. The next prime is 1440448489. The reversal of 1440448487 is 7848440441.

It is a strong prime.

It is an emirp because it is prime and its reverse (7848440441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1440448487 - 2⁶ = 1440448423 is a prime.

Together with 1440448489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440448489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720224243 + 720224244.

It is an arithmetic number, because the mean of its divisors is an integer number (720224244).

Almost surely, 2^1440448487 is an apocalyptic number.

1440448487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440448487 is an equidigital number, since it uses as much as digits as its factorization.

1440448487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 458752, while the sum is 44.

The square root of 1440448487 is about 37953.2407970650. The cubic root of 1440448487 is about 1129.3604564956.

The spelling of 1440448487 in words is "one billion, four hundred forty million, four hundred forty-eight thousand, four hundred eighty-seven".