8278385441 has 2 divisors, whose sum is σ = 8278385442. Its totient is φ = 8278385440.

The previous prime is 8278385429. The next prime is 8278385503. The reversal of 8278385441 is 1445838728.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7932574225 + 345811216 = 89065^2 + 18596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8278385441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8278385441.

It is not a weakly prime, because it can be changed into another prime (8278385411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4139192720 + 4139192721.

It is an arithmetic number, because the mean of its divisors is an integer number (4139192721).

Almost surely, 2^8278385441 is an apocalyptic number.

It is an amenable number.

8278385441 is a deficient number, since it is larger than the sum of its proper divisors (1).

8278385441 is an equidigital number, since it uses as much as digits as its factorization.

8278385441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1720320, while the sum is 50.

The square root of 8278385441 is about 90985.6331571089. The cubic root of 8278385441 is about 2022.9347793817.

The spelling of 8278385441 in words is "eight billion, two hundred seventy-eight million, three hundred eighty-five thousand, four hundred forty-one".