1306489 has 2 divisors, whose sum is σ = 1306490. Its totient is φ = 1306488.

The previous prime is 1306483. The next prime is 1306499. The reversal of 1306489 is 9846031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1299600 + 6889 = 1140^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306489 - 2¹⁵ = 1273721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1306489.

It is not a weakly prime, because it can be changed into another prime (1306483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653244 + 653245.

It is an arithmetic number, because the mean of its divisors is an integer number (653245).

2^1306489 is an apocalyptic number.

It is an amenable number.

1306489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306489 is an equidigital number, since it uses as much as digits as its factorization.

1306489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1306489 is about 1143.0174976788. The cubic root of 1306489 is about 109.3205779868.

The spelling of 1306489 in words is "one million, three hundred six thousand, four hundred eighty-nine".