1286799379 has 2 divisors, whose sum is σ = 1286799380. Its totient is φ = 1286799378.

The previous prime is 1286799341. The next prime is 1286799389. The reversal of 1286799379 is 9739976821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1286799379 - 2²¹ = 1284702227 is a prime.

It is not a weakly prime, because it can be changed into another prime (1286799389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643399689 + 643399690.

It is an arithmetic number, because the mean of its divisors is an integer number (643399690).

Almost surely, 2^1286799379 is an apocalyptic number.

1286799379 is a deficient number, since it is larger than the sum of its proper divisors (1).

1286799379 is an equidigital number, since it uses as much as digits as its factorization.

1286799379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10287648, while the sum is 61.

The square root of 1286799379 is about 35871.9859918572. The cubic root of 1286799379 is about 1087.6861893567.

The spelling of 1286799379 in words is "one billion, two hundred eighty-six million, seven hundred ninety-nine thousand, three hundred seventy-nine".