866219338 has 8 divisors (see below), whose sum is σ = 1300287780. Its totient is φ = 432790080.

The previous prime is 866219317. The next prime is 866219351. The reversal of 866219338 is 833912668.

866219338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 801625969 + 64593369 = 28313^2 + 8037^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156393 + ... + 161836.

Almost surely, 2^866219338 is an apocalyptic number.

866219338 is a deficient number, since it is larger than the sum of its proper divisors (434068442).

866219338 is a wasteful number, since it uses less digits than its factorization.

866219338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319592.

The product of its digits is 373248, while the sum is 46.

The square root of 866219338 is about 29431.6044075072. The cubic root of 866219338 is about 953.2554384277.

It can be divided in two parts, 86621 and 9338, that added together give a palindrome (95959).

The spelling of 866219338 in words is "eight hundred sixty-six million, two hundred nineteen thousand, three hundred thirty-eight".