868099 has 4 divisors (see below), whose sum is σ = 874000. Its totient is φ = 862200.

The previous prime is 868081. The next prime is 868103. The reversal of 868099 is 990868.

It is a happy number.

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 868099 - 2¹¹ = 866051 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (868019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2724 + ... + 3025.

It is an arithmetic number, because the mean of its divisors is an integer number (218500).

2⁸⁶⁸⁰⁹⁹ is an apocalyptic number.

868099 is a deficient number, since it is larger than the sum of its proper divisors (5901).

868099 is a wasteful number, since it uses less digits than its factorization.

868099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5900.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 868099 is about 931.7183050687. The cubic root of 868099 is about 95.3944449267.

The spelling of 868099 in words is "eight hundred sixty-eight thousand, ninety-nine".