863099 has 4 divisors (see below), whose sum is σ = 886464. Its totient is φ = 839736.

The previous prime is 863087. The next prime is 863119. The reversal of 863099 is 990368.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 863099 - 2¹² = 859003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (863299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11627 + ... + 11700.

It is an arithmetic number, because the mean of its divisors is an integer number (221616).

2⁸⁶³⁰⁹⁹ is an apocalyptic number.

863099 is a deficient number, since it is larger than the sum of its proper divisors (23365).

863099 is a wasteful number, since it uses less digits than its factorization.

863099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23364.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 863099 is about 929.0312158372. The cubic root of 863099 is about 95.2109440023.

The spelling of 863099 in words is "eight hundred sixty-three thousand, ninety-nine".