863830221 has 16 divisors (see below), whose sum is σ = 1229928960. Its totient is φ = 538090560.

The previous prime is 863830217. The next prime is 863830267. The reversal of 863830221 is 122038368.

863830221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 863830221 - 2² = 863830217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863830291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157450 + ... + 162843.

It is an arithmetic number, because the mean of its divisors is an integer number (76870560).

Almost surely, 2^863830221 is an apocalyptic number.

It is an amenable number.

863830221 is a deficient number, since it is larger than the sum of its proper divisors (366098739).

863830221 is a wasteful number, since it uses less digits than its factorization.

863830221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320356.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 863830221 is about 29390.9887720709. The cubic root of 863830221 is about 952.3782411304.

Adding to 863830221 its reverse (122038368), we get a palindrome (985868589).

The spelling of 863830221 in words is "eight hundred sixty-three million, eight hundred thirty thousand, two hundred twenty-one".