280870463 has 2 divisors, whose sum is σ = 280870464. Its totient is φ = 280870462.

The previous prime is 280870439. The next prime is 280870477. The reversal of 280870463 is 364078082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280870463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280870063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140435231 + 140435232.

It is an arithmetic number, because the mean of its divisors is an integer number (140435232).

Almost surely, 2^280870463 is an apocalyptic number.

280870463 is a deficient number, since it is larger than the sum of its proper divisors (1).

280870463 is an equidigital number, since it uses as much as digits as its factorization.

280870463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 280870463 is about 16759.1904040738. The cubic root of 280870463 is about 654.8904993417.

The spelling of 280870463 in words is "two hundred eighty million, eight hundred seventy thousand, four hundred sixty-three".