1489909 has 2 divisors, whose sum is σ = 1489910. Its totient is φ = 1489908.

The previous prime is 1489903. The next prime is 1489937. The reversal of 1489909 is 9099841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1030225 + 459684 = 1015^2 + 678^2 .

It is a cyclic number.

It is not a de Polignac number, because 1489909 - 2⁷ = 1489781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1489903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744954 + 744955.

It is an arithmetic number, because the mean of its divisors is an integer number (744955).

2^1489909 is an apocalyptic number.

It is an amenable number.

1489909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489909 is an equidigital number, since it uses as much as digits as its factorization.

1489909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 1489909 is about 1220.6182859518. The cubic root of 1489909 is about 114.2141506588.

The spelling of 1489909 in words is "one million, four hundred eighty-nine thousand, nine hundred nine".