1280276339 has 2 divisors, whose sum is σ = 1280276340. Its totient is φ = 1280276338.

The previous prime is 1280276323. The next prime is 1280276383. The reversal of 1280276339 is 9336720821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1280276339 - 2⁴ = 1280276323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1280276296 and 1280276305.

It is not a weakly prime, because it can be changed into another prime (1280276399) 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, 640138169 + 640138170.

It is an arithmetic number, because the mean of its divisors is an integer number (640138170).

Almost surely, 2^1280276339 is an apocalyptic number.

1280276339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1280276339 is an equidigital number, since it uses as much as digits as its factorization.

1280276339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 1280276339 is about 35780.9493865101. The cubic root of 1280276339 is about 1085.8451763751.

The spelling of 1280276339 in words is "one billion, two hundred eighty million, two hundred seventy-six thousand, three hundred thirty-nine".