8278367269 has 2 divisors, whose sum is σ = 8278367270. Its totient is φ = 8278367268.

The previous prime is 8278367249. The next prime is 8278367281. The reversal of 8278367269 is 9627638728.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7959316225 + 319051044 = 89215^2 + 17862^2 .

It is a cyclic number.

It is not a de Polignac number, because 8278367269 - 2²¹ = 8276270117 is a prime.

It is a super-2 number, since 2×8278367269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8278367249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4139183634 + 4139183635.

It is an arithmetic number, because the mean of its divisors is an integer number (4139183635).

Almost surely, 2^8278367269 is an apocalyptic number.

It is an amenable number.

8278367269 is a deficient number, since it is larger than the sum of its proper divisors (1).

8278367269 is an equidigital number, since it uses as much as digits as its factorization.

8278367269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 58.

The square root of 8278367269 is about 90985.5332951343. The cubic root of 8278367269 is about 2022.9332991898.

The spelling of 8278367269 in words is "eight billion, two hundred seventy-eight million, three hundred sixty-seven thousand, two hundred sixty-nine".