281363879 has 2 divisors, whose sum is σ = 281363880. Its totient is φ = 281363878.

The previous prime is 281363869. The next prime is 281363891. The reversal of 281363879 is 978363182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 281363879 - 2¹² = 281359783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (281363839) 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, 140681939 + 140681940.

It is an arithmetic number, because the mean of its divisors is an integer number (140681940).

Almost surely, 2^281363879 is an apocalyptic number.

281363879 is a deficient number, since it is larger than the sum of its proper divisors (1).

281363879 is an equidigital number, since it uses as much as digits as its factorization.

281363879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 281363879 is about 16773.9047034374. The cubic root of 281363879 is about 655.2737654819.

The spelling of 281363879 in words is "two hundred eighty-one million, three hundred sixty-three thousand, eight hundred seventy-nine".