803861 has 4 divisors (see below), whose sum is σ = 829824. Its totient is φ = 777900.

The previous prime is 803857. The next prime is 803867. The reversal of 803861 is 168308.

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 803861 - 2² = 803857 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 803861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (803867) 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, 12935 + ... + 12996.

It is an arithmetic number, because the mean of its divisors is an integer number (207456).

2⁸⁰³⁸⁶¹ is an apocalyptic number.

It is an amenable number.

803861 is a deficient number, since it is larger than the sum of its proper divisors (25963).

803861 is a wasteful number, since it uses less digits than its factorization.

803861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25962.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 803861 is about 896.5829576788. The cubic root of 803861 is about 92.9808801794.

The spelling of 803861 in words is "eight hundred three thousand, eight hundred sixty-one".