280970447 has 2 divisors, whose sum is σ = 280970448. Its totient is φ = 280970446.

The previous prime is 280970401. The next prime is 280970519. The reversal of 280970447 is 744079082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 280970447 - 2¹⁸ = 280708303 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 (280970147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140485223 + 140485224.

It is an arithmetic number, because the mean of its divisors is an integer number (140485224).

Almost surely, 2^280970447 is an apocalyptic number.

280970447 is a deficient number, since it is larger than the sum of its proper divisors (1).

280970447 is an equidigital number, since it uses as much as digits as its factorization.

280970447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 280970447 is about 16762.1730989750. The cubic root of 280970447 is about 654.9681992214.

The spelling of 280970447 in words is "two hundred eighty million, nine hundred seventy thousand, four hundred forty-seven".