863423369 has 2 divisors, whose sum is σ = 863423370. Its totient is φ = 863423368.

The previous prime is 863423357. The next prime is 863423401. The reversal of 863423369 is 963324368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 520432969 + 342990400 = 22813^2 + 18520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-863423369 is a prime.

It is a super-2 number, since 2×863423369² = 1490999828270620322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (863423269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431711684 + 431711685.

It is an arithmetic number, because the mean of its divisors is an integer number (431711685).

Almost surely, 2^863423369 is an apocalyptic number.

It is an amenable number.

863423369 is a deficient number, since it is larger than the sum of its proper divisors (1).

863423369 is an equidigital number, since it uses as much as digits as its factorization.

863423369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 44.

The square root of 863423369 is about 29384.0665837797. The cubic root of 863423369 is about 952.2286986892.

Subtracting 863423369 from its reverse (963324368), we obtain a palindrome (99900999).

The spelling of 863423369 in words is "eight hundred sixty-three million, four hundred twenty-three thousand, three hundred sixty-nine".