863084881 has 2 divisors, whose sum is σ = 863084882. Its totient is φ = 863084880.

The previous prime is 863084851. The next prime is 863084909. The reversal of 863084881 is 188480368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 773952400 + 89132481 = 27820^2 + 9441^2 .

It is a cyclic number.

It is not a de Polignac number, because 863084881 - 2²³ = 854696273 is a prime.

It is a super-2 number, since 2×863084881² = 1489831023621568322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (863084851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431542440 + 431542441.

It is an arithmetic number, because the mean of its divisors is an integer number (431542441).

Almost surely, 2^863084881 is an apocalyptic number.

It is an amenable number.

863084881 is a deficient number, since it is larger than the sum of its proper divisors (1).

863084881 is an equidigital number, since it uses as much as digits as its factorization.

863084881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 863084881 is about 29378.3062990364. The cubic root of 863084881 is about 952.1042483025.

The spelling of 863084881 in words is "eight hundred sixty-three million, eighty-four thousand, eight hundred eighty-one".