863442893 has 2 divisors, whose sum is σ = 863442894. Its totient is φ = 863442892.

The previous prime is 863442889. The next prime is 863442913. The reversal of 863442893 is 398244368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 748460164 + 114982729 = 27358^2 + 10723^2 .

It is a cyclic number.

It is not a de Polignac number, because 863442893 - 2² = 863442889 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863442823) 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, 431721446 + 431721447.

It is an arithmetic number, because the mean of its divisors is an integer number (431721447).

Almost surely, 2^863442893 is an apocalyptic number.

It is an amenable number.

863442893 is a deficient number, since it is larger than the sum of its proper divisors (1).

863442893 is an equidigital number, since it uses as much as digits as its factorization.

863442893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 47.

The square root of 863442893 is about 29384.3988027661. The cubic root of 863442893 is about 952.2358759997.

The spelling of 863442893 in words is "eight hundred sixty-three million, four hundred forty-two thousand, eight hundred ninety-three".