1489409 has 2 divisors, whose sum is σ = 1489410. Its totient is φ = 1489408.

The previous prime is 1489403. The next prime is 1489441. The reversal of 1489409 is 9049841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1329409 + 160000 = 1153^2 + 400^2 .

It is an emirp because it is prime and its reverse (9049841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1489409 - 2⁴ = 1489393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1489403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744704 + 744705.

It is an arithmetic number, because the mean of its divisors is an integer number (744705).

2^1489409 is an apocalyptic number.

It is an amenable number.

1489409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489409 is an equidigital number, since it uses as much as digits as its factorization.

1489409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 1489409 is about 1220.4134545309. The cubic root of 1489409 is about 114.2013728170.

The spelling of 1489409 in words is "one million, four hundred eighty-nine thousand, four hundred nine".