280800089 has 2 divisors, whose sum is σ = 280800090. Its totient is φ = 280800088.

The previous prime is 280800083. The next prime is 280800109. The reversal of 280800089 is 980008082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262180864 + 18619225 = 16192^2 + 4315^2 .

It is a cyclic number.

It is not a de Polignac number, because 280800089 - 2⁸ = 280799833 is a prime.

It is not a weakly prime, because it can be changed into another prime (280800083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140400044 + 140400045.

It is an arithmetic number, because the mean of its divisors is an integer number (140400045).

Almost surely, 2^280800089 is an apocalyptic number.

It is an amenable number.

280800089 is a deficient number, since it is larger than the sum of its proper divisors (1).

280800089 is an equidigital number, since it uses as much as digits as its factorization.

280800089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 280800089 is about 16757.0907081152. The cubic root of 280800089 is about 654.8357990204.

The spelling of 280800089 in words is "two hundred eighty million, eight hundred thousand, eighty-nine".