1440098489 has 2 divisors, whose sum is σ = 1440098490. Its totient is φ = 1440098488.

The previous prime is 1440098477. The next prime is 1440098507. The reversal of 1440098489 is 9848900441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1091641600 + 348456889 = 33040^2 + 18667^2 .

It is an emirp because it is prime and its reverse (9848900441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1440098489 - 2¹² = 1440094393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440098449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720049244 + 720049245.

It is an arithmetic number, because the mean of its divisors is an integer number (720049245).

Almost surely, 2^1440098489 is an apocalyptic number.

It is an amenable number.

1440098489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440098489 is an equidigital number, since it uses as much as digits as its factorization.

1440098489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 1440098489 is about 37948.6296063507. The cubic root of 1440098489 is about 1129.2689789863.

The spelling of 1440098489 in words is "one billion, four hundred forty million, ninety-eight thousand, four hundred eighty-nine".