340727489 has 2 divisors, whose sum is σ = 340727490. Its totient is φ = 340727488.

The previous prime is 340727449. The next prime is 340727531. The reversal of 340727489 is 984727043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340033600 + 693889 = 18440^2 + 833^2 .

It is an emirp because it is prime and its reverse (984727043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340727489 is a prime.

It is not a weakly prime, because it can be changed into another prime (340727449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170363744 + 170363745.

It is an arithmetic number, because the mean of its divisors is an integer number (170363745).

Almost surely, 2^340727489 is an apocalyptic number.

It is an amenable number.

340727489 is a deficient number, since it is larger than the sum of its proper divisors (1).

340727489 is an equidigital number, since it uses as much as digits as its factorization.

340727489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 340727489 is about 18458.8051888523. The cubic root of 340727489 is about 698.4506474034.

The spelling of 340727489 in words is "three hundred forty million, seven hundred twenty-seven thousand, four hundred eighty-nine".