869099 has 8 divisors (see below), whose sum is σ = 1083648. Its totient is φ = 677160.

The previous prime is 869081. The next prime is 869119. The reversal of 869099 is 990968.

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

It is not a de Polignac number, because 869099 - 2¹² = 865003 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13 and base 15.

It is not an unprimeable number, because it can be changed into a prime (869039) 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 7 ways as a sum of consecutive naturals, for example, 5567 + ... + 5720.

It is an arithmetic number, because the mean of its divisors is an integer number (135456).

2⁸⁶⁹⁰⁹⁹ is an apocalyptic number.

869099 is a deficient number, since it is larger than the sum of its proper divisors (214549).

869099 is a wasteful number, since it uses less digits than its factorization.

869099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11305.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 869099 is about 932.2547934980. The cubic root of 869099 is about 95.4310605043.

The spelling of 869099 in words is "eight hundred sixty-nine thousand, ninety-nine".