868394 has 8 divisors (see below), whose sum is σ = 1379268. Its totient is φ = 408640.

The previous prime is 868381. The next prime is 868397. The reversal of 868394 is 493868.

It can be written as a sum of positive squares in 2 ways, for example, as 855625 + 12769 = 925^2 + 113^2 .

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

It is a Curzon number.

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 868394.

It is not an unprimeable number, because it can be changed into a prime (868397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12737 + ... + 12804.

2⁸⁶⁸³⁹⁴ is an apocalyptic number.

868394 is a deficient number, since it is larger than the sum of its proper divisors (510874).

868394 is a wasteful number, since it uses less digits than its factorization.

868394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25560.

The product of its digits is 41472, while the sum is 38.

The square root of 868394 is about 931.8766012729. The cubic root of 868394 is about 95.4052494449.

The spelling of 868394 in words is "eight hundred sixty-eight thousand, three hundred ninety-four".