863268779 has 2 divisors, whose sum is σ = 863268780. Its totient is φ = 863268778.

The previous prime is 863268751. The next prime is 863268797. The reversal of 863268779 is 977862368.

It is a happy number.

Together with next prime (863268797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-863268779 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (863268799) 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, 431634389 + 431634390.

It is an arithmetic number, because the mean of its divisors is an integer number (431634390).

Almost surely, 2^863268779 is an apocalyptic number.

863268779 is a deficient number, since it is larger than the sum of its proper divisors (1).

863268779 is an equidigital number, since it uses as much as digits as its factorization.

863268779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 56.

The square root of 863268779 is about 29381.4359587819. The cubic root of 863268779 is about 952.1718653032.

The spelling of 863268779 in words is "eight hundred sixty-three million, two hundred sixty-eight thousand, seven hundred seventy-nine".