864938 has 8 divisors (see below), whose sum is σ = 1353888. Its totient is φ = 413644.

The previous prime is 864917. The next prime is 864947. The reversal of 864938 is 839468.

864938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is an unprimeable number.

864938 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9356 + ... + 9447.

It is an arithmetic number, because the mean of its divisors is an integer number (169236).

2⁸⁶⁴⁹³⁸ is an apocalyptic number.

864938 is a deficient number, since it is larger than the sum of its proper divisors (488950).

864938 is a wasteful number, since it uses less digits than its factorization.

864938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18828.

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

The square root of 864938 is about 930.0204298831. The cubic root of 864938 is about 95.2785178328.

Subtracting from 864938 its sum of digits (38), we obtain a square (864900 = 930²).

It can be divided in two parts, 8 and 64938, that added together give a palindrome (64946).

The spelling of 864938 in words is "eight hundred sixty-four thousand, nine hundred thirty-eight".