863500441 has 2 divisors, whose sum is σ = 863500442. Its totient is φ = 863500440.

The previous prime is 863500439. The next prime is 863500511. The reversal of 863500441 is 144005368.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 862009600 + 1490841 = 29360^2 + 1221^2 .

It is a cyclic number.

It is not a de Polignac number, because 863500441 - 2¹ = 863500439 is a prime.

Together with 863500439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (863500411) 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, 431750220 + 431750221.

It is an arithmetic number, because the mean of its divisors is an integer number (431750221).

Almost surely, 2^863500441 is an apocalyptic number.

It is an amenable number.

863500441 is a deficient number, since it is larger than the sum of its proper divisors (1).

863500441 is an equidigital number, since it uses as much as digits as its factorization.

863500441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 863500441 is about 29385.3780135631. The cubic root of 863500441 is about 952.2570308645.

The spelling of 863500441 in words is "eight hundred sixty-three million, five hundred thousand, four hundred forty-one".