788765489 has 2 divisors, whose sum is σ = 788765490. Its totient is φ = 788765488.

The previous prime is 788765479. The next prime is 788765501. The reversal of 788765489 is 984567887.

788765489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 784000000 + 4765489 = 28000^2 + 2183^2 .

It is an emirp because it is prime and its reverse (984567887) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 788765489 - 2¹⁶ = 788699953 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (788765429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394382744 + 394382745.

It is an arithmetic number, because the mean of its divisors is an integer number (394382745).

Almost surely, 2^788765489 is an apocalyptic number.

It is an amenable number.

788765489 is a deficient number, since it is larger than the sum of its proper divisors (1).

788765489 is an equidigital number, since it uses as much as digits as its factorization.

788765489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27095040, while the sum is 62.

The square root of 788765489 is about 28084.9690938053. The cubic root of 788765489 is about 923.9517666426.

The spelling of 788765489 in words is "seven hundred eighty-eight million, seven hundred sixty-five thousand, four hundred eighty-nine".