867899 has 4 divisors (see below), whose sum is σ = 873264. Its totient is φ = 862536.

The previous prime is 867887. The next prime is 867913. The reversal of 867899 is 998768.

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 867899 - 2¹² = 863803 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 (867829) 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, 2432 + ... + 2765.

It is an arithmetic number, because the mean of its divisors is an integer number (218316).

2⁸⁶⁷⁸⁹⁹ is an apocalyptic number.

867899 is a deficient number, since it is larger than the sum of its proper divisors (5365).

867899 is a wasteful number, since it uses less digits than its factorization.

867899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5364.

The product of its digits is 217728, while the sum is 47.

The square root of 867899 is about 931.6109703090. The cubic root of 867899 is about 95.3871184373.

The spelling of 867899 in words is "eight hundred sixty-seven thousand, eight hundred ninety-nine".