8463281 has 2 divisors, whose sum is σ = 8463282. Its totient is φ = 8463280.

The previous prime is 8463253. The next prime is 8463283. The reversal of 8463281 is 1823648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6974881 + 1488400 = 2641^2 + 1220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8463281 is a prime.

It is a super-2 number, since 2×8463281² = 143254250569922, which contains 22 as substring.

Together with 8463283, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8463283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4231640 + 4231641.

It is an arithmetic number, because the mean of its divisors is an integer number (4231641).

Almost surely, 2^8463281 is an apocalyptic number.

It is an amenable number.

8463281 is a deficient number, since it is larger than the sum of its proper divisors (1).

8463281 is an equidigital number, since it uses as much as digits as its factorization.

8463281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 8463281 is about 2909.1718752937. The cubic root of 8463281 is about 203.7884597503.

The spelling of 8463281 in words is "eight million, four hundred sixty-three thousand, two hundred eighty-one".