788253409 has 2 divisors, whose sum is σ = 788253410. Its totient is φ = 788253408.

The previous prime is 788253397. The next prime is 788253457. The reversal of 788253409 is 904352887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 788037184 + 216225 = 28072^2 + 465^2 .

It is an emirp because it is prime and its reverse (904352887) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 788253409 - 2⁷ = 788253281 is a prime.

It is not a weakly prime, because it can be changed into another prime (788253469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394126704 + 394126705.

It is an arithmetic number, because the mean of its divisors is an integer number (394126705).

Almost surely, 2^788253409 is an apocalyptic number.

It is an amenable number.

788253409 is a deficient number, since it is larger than the sum of its proper divisors (1).

788253409 is an equidigital number, since it uses as much as digits as its factorization.

788253409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 788253409 is about 28075.8509933359. The cubic root of 788253409 is about 923.7517749451.

The spelling of 788253409 in words is "seven hundred eighty-eight million, two hundred fifty-three thousand, four hundred nine".