280280963 has 2 divisors, whose sum is σ = 280280964. Its totient is φ = 280280962.

The previous prime is 280280873. The next prime is 280280971. The reversal of 280280963 is 369082082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280280963 - 2¹⁰ = 280279939 is a prime.

It is not a weakly prime, because it can be changed into another prime (280280983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140140481 + 140140482.

It is an arithmetic number, because the mean of its divisors is an integer number (140140482).

Almost surely, 2^280280963 is an apocalyptic number.

280280963 is a deficient number, since it is larger than the sum of its proper divisors (1).

280280963 is an equidigital number, since it uses as much as digits as its factorization.

280280963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 280280963 is about 16741.5938010692. The cubic root of 280280963 is about 654.4320099834.

The spelling of 280280963 in words is "two hundred eighty million, two hundred eighty thousand, nine hundred sixty-three".