1276944463 has 2 divisors, whose sum is σ = 1276944464. Its totient is φ = 1276944462.

The previous prime is 1276944437. The next prime is 1276944479. The reversal of 1276944463 is 3644496721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1276944463 - 2²¹ = 1274847311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1276944863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638472231 + 638472232.

It is an arithmetic number, because the mean of its divisors is an integer number (638472232).

Almost surely, 2^1276944463 is an apocalyptic number.

1276944463 is a deficient number, since it is larger than the sum of its proper divisors (1).

1276944463 is an equidigital number, since it uses as much as digits as its factorization.

1276944463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 46.

The square root of 1276944463 is about 35734.3596976356. The cubic root of 1276944463 is about 1084.9023995680.

The spelling of 1276944463 in words is "one billion, two hundred seventy-six million, nine hundred forty-four thousand, four hundred sixty-three".