87099 has 4 divisors (see below), whose sum is σ = 116136. Its totient is φ = 58064.

The previous prime is 87083. The next prime is 87103. The reversal of 87099 is 99078.

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 87099 - 2⁴ = 87083 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (87049) 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, 14514 + ... + 14519.

It is an arithmetic number, because the mean of its divisors is an integer number (29034).

2⁸⁷⁰⁹⁹ is an apocalyptic number.

87099 is a deficient number, since it is larger than the sum of its proper divisors (29037).

87099 is a wasteful number, since it uses less digits than its factorization.

87099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29036.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 87099 is about 295.1253970772. The cubic root of 87099 is about 44.3272772677.

It can be divided in two parts, 870 and 99, that added together give a palindrome (969).

The spelling of 87099 in words is "eighty-seven thousand, ninety-nine".