8278279 has 2 divisors, whose sum is σ = 8278280. Its totient is φ = 8278278.

The previous prime is 8278261. The next prime is 8278297. The reversal of 8278279 is 9728728.

Together with next prime (8278297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (8278261) and next prime (8278297).

It is a cyclic number.

It is not a de Polignac number, because 8278279 - 2⁵ = 8278247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8878279) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4139139 + 4139140.

It is an arithmetic number, because the mean of its divisors is an integer number (4139140).

Almost surely, 2^8278279 is an apocalyptic number.

8278279 is a deficient number, since it is larger than the sum of its proper divisors (1).

8278279 is an equidigital number, since it uses as much as digits as its factorization.

8278279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 43.

The square root of 8278279 is about 2877.1998540247. The cubic root of 8278279 is about 202.2926109248.

The spelling of 8278279 in words is "eight million, two hundred seventy-eight thousand, two hundred seventy-nine".