280808867 has 2 divisors, whose sum is σ = 280808868. Its totient is φ = 280808866.

The previous prime is 280808861. The next prime is 280808903. The reversal of 280808867 is 768808082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 280808867 - 2⁴ = 280808851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (280808861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140404433 + 140404434.

It is an arithmetic number, because the mean of its divisors is an integer number (140404434).

Almost surely, 2^280808867 is an apocalyptic number.

280808867 is a deficient number, since it is larger than the sum of its proper divisors (1).

280808867 is an equidigital number, since it uses as much as digits as its factorization.

280808867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 344064, while the sum is 47.

The square root of 280808867 is about 16757.3526250419. The cubic root of 280808867 is about 654.8426224854.

The spelling of 280808867 in words is "two hundred eighty million, eight hundred eight thousand, eight hundred sixty-seven".