864893 has 4 divisors (see below), whose sum is σ = 870240. Its totient is φ = 859548.

The previous prime is 864887. The next prime is 864901. The reversal of 864893 is 398468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 864893 - 2¹⁰ = 863869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864893.

It is not an unprimeable number, because it can be changed into a prime (864803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2423 + ... + 2756.

It is an arithmetic number, because the mean of its divisors is an integer number (217560).

2⁸⁶⁴⁸⁹³ is an apocalyptic number.

It is an amenable number.

864893 is a deficient number, since it is larger than the sum of its proper divisors (5347).

864893 is a wasteful number, since it uses less digits than its factorization.

864893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346.

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

The square root of 864893 is about 929.9962365515. The cubic root of 864893 is about 95.2768654571.

The spelling of 864893 in words is "eight hundred sixty-four thousand, eight hundred ninety-three".