867099 has 4 divisors (see below), whose sum is σ = 1156136. Its totient is φ = 578064.

The previous prime is 867091. The next prime is 867121. The reversal of 867099 is 990768.

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

It is not a de Polignac number, because 867099 - 2³ = 867091 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (867091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144514 + ... + 144519.

It is an arithmetic number, because the mean of its divisors is an integer number (289034).

2⁸⁶⁷⁰⁹⁹ is an apocalyptic number.

867099 is a deficient number, since it is larger than the sum of its proper divisors (289037).

867099 is a wasteful number, since it uses less digits than its factorization.

867099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289036.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 867099 is about 931.1815075483. The cubic root of 867099 is about 95.3578012190.

The spelling of 867099 in words is "eight hundred sixty-seven thousand, ninety-nine".