787894369 has 2 divisors, whose sum is σ = 787894370. Its totient is φ = 787894368.

The previous prime is 787894333. The next prime is 787894379. The reversal of 787894369 is 963498787.

787894369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 488189025 + 299705344 = 22095^2 + 17312^2 .

It is an emirp because it is prime and its reverse (963498787) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 787894369 - 2¹¹ = 787892321 is a prime.

It is a super-2 number, since 2×787894369² = 1241555073403816322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (787894309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393947184 + 393947185.

It is an arithmetic number, because the mean of its divisors is an integer number (393947185).

Almost surely, 2^787894369 is an apocalyptic number.

It is an amenable number.

787894369 is a deficient number, since it is larger than the sum of its proper divisors (1).

787894369 is an equidigital number, since it uses as much as digits as its factorization.

787894369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 61.

The square root of 787894369 is about 28069.4561578952. The cubic root of 787894369 is about 923.6115010169.

The spelling of 787894369 in words is "seven hundred eighty-seven million, eight hundred ninety-four thousand, three hundred sixty-nine".