8394779 has 2 divisors, whose sum is σ = 8394780. Its totient is φ = 8394778.

The previous prime is 8394739. The next prime is 8394797. The reversal of 8394779 is 9774938.

Together with next prime (8394797) 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-8394779 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 8⁷ + 3¹² + 9 + 4⁵ + 7³ + 7⁸ + 9 .

It is not a weakly prime, because it can be changed into another prime (8394739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4197389 + 4197390.

It is an arithmetic number, because the mean of its divisors is an integer number (4197390).

Almost surely, 2^8394779 is an apocalyptic number.

8394779 is a deficient number, since it is larger than the sum of its proper divisors (1).

8394779 is an equidigital number, since it uses as much as digits as its factorization.

8394779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 47.

The square root of 8394779 is about 2897.3745011648. The cubic root of 8394779 is about 203.2371467186.

The spelling of 8394779 in words is "eight million, three hundred ninety-four thousand, seven hundred seventy-nine".