867999999 has 8 divisors (see below), whose sum is σ = 1157473152. Its totient is φ = 578596760.

The previous prime is 867999911. The next prime is 868000033. The reversal of 867999999 is 999999768.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 867999999 - 2⁷ = 867999871 is a prime.

867999999 is a modest number, since divided by 99999 gives 8679 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 867999999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867999299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29644 + ... + 51134.

It is an arithmetic number, because the mean of its divisors is an integer number (144684144).

Almost surely, 2^867999999 is an apocalyptic number.

867999999 is a deficient number, since it is larger than the sum of its proper divisors (289473153).

867999999 is a wasteful number, since it uses less digits than its factorization.

867999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34957.

The product of its digits is 178564176, while the sum is 75.

The square root of 867999999 is about 29461.8397083414. The cubic root of 867999999 is about 953.9081841852.

The spelling of 867999999 in words is "eight hundred sixty-seven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".