863841 has 8 divisors (see below), whose sum is σ = 1256544. Its totient is φ = 523520.

The previous prime is 863833. The next prime is 863843. The reversal of 863841 is 148368.

It is a happy number.

863841 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 cyclic number.

It is not a de Polignac number, because 863841 - 2³ = 863833 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 863799 and 863808.

It is not an unprimeable number, because it can be changed into a prime (863843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13056 + ... + 13121.

It is an arithmetic number, because the mean of its divisors is an integer number (157068).

2⁸⁶³⁸⁴¹ is an apocalyptic number.

It is an amenable number.

863841 is a deficient number, since it is larger than the sum of its proper divisors (392703).

863841 is a wasteful number, since it uses less digits than its factorization.

863841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26191.

The product of its digits is 4608, while the sum is 30.

The square root of 863841 is about 929.4304707723. The cubic root of 863841 is about 95.2382202419.

The spelling of 863841 in words is "eight hundred sixty-three thousand, eight hundred forty-one".