280608047 has 2 divisors, whose sum is σ = 280608048. Its totient is φ = 280608046.

The previous prime is 280608043. The next prime is 280608049. The reversal of 280608047 is 740806082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280608047 - 2² = 280608043 is a prime.

Together with 280608049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 280607998 and 280608016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280608043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140304023 + 140304024.

It is an arithmetic number, because the mean of its divisors is an integer number (140304024).

Almost surely, 2^280608047 is an apocalyptic number.

280608047 is a deficient number, since it is larger than the sum of its proper divisors (1).

280608047 is an equidigital number, since it uses as much as digits as its factorization.

280608047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 280608047 is about 16751.3595567643. The cubic root of 280608047 is about 654.6864820497.

The spelling of 280608047 in words is "two hundred eighty million, six hundred eight thousand, forty-seven".