863478223 has 2 divisors, whose sum is σ = 863478224. Its totient is φ = 863478222.

The previous prime is 863478211. The next prime is 863478251. The reversal of 863478223 is 322874368.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 863478223 - 2¹⁷ = 863347151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 863478223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863478283) 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, 431739111 + 431739112.

It is an arithmetic number, because the mean of its divisors is an integer number (431739112).

Almost surely, 2^863478223 is an apocalyptic number.

863478223 is a deficient number, since it is larger than the sum of its proper divisors (1).

863478223 is an equidigital number, since it uses as much as digits as its factorization.

863478223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 43.

The square root of 863478223 is about 29384.9999659690. Note that the first 4 decimals coincide. The cubic root of 863478223 is about 952.2488635542.

The spelling of 863478223 in words is "eight hundred sixty-three million, four hundred seventy-eight thousand, two hundred twenty-three".