1404440489 has 2 divisors, whose sum is σ = 1404440490. Its totient is φ = 1404440488.

The previous prime is 1404440473. The next prime is 1404440491. The reversal of 1404440489 is 9840444041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1316456089 + 87984400 = 36283^2 + 9380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404440489 - 2⁴ = 1404440473 is a prime.

Together with 1404440491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1404440419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702220244 + 702220245.

It is an arithmetic number, because the mean of its divisors is an integer number (702220245).

Almost surely, 2^1404440489 is an apocalyptic number.

It is an amenable number.

1404440489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404440489 is an equidigital number, since it uses as much as digits as its factorization.

1404440489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 1404440489 is about 37475.8654202942. The cubic root of 1404440489 is about 1119.8704380847.

The spelling of 1404440489 in words is "one billion, four hundred four million, four hundred forty thousand, four hundred eighty-nine".