865222238 has 8 divisors (see below), whose sum is σ = 1298603232. Its totient is φ = 432354496.

The previous prime is 865222229. The next prime is 865222273. The reversal of 865222238 is 832222568.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×865222238² = 1497219042259457288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 124070 + ... + 130857.

It is an arithmetic number, because the mean of its divisors is an integer number (162325404).

Almost surely, 2^865222238 is an apocalyptic number.

865222238 is a deficient number, since it is larger than the sum of its proper divisors (433380994).

865222238 is a wasteful number, since it uses less digits than its factorization.

865222238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256626.

The product of its digits is 92160, while the sum is 38.

The square root of 865222238 is about 29414.6602564096. The cubic root of 865222238 is about 952.8895357474.

The spelling of 865222238 in words is "eight hundred sixty-five million, two hundred twenty-two thousand, two hundred thirty-eight".