86169 has 4 divisors (see below), whose sum is σ = 114896. Its totient is φ = 57444.

The previous prime is 86161. The next prime is 86171. The reversal of 86169 is 96168.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 86169 - 2³ = 86161 is a prime.

It is a super-2 number, since 2×86169² = 14850193122, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (86161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14359 + ... + 14364.

It is an arithmetic number, because the mean of its divisors is an integer number (28724).

2⁸⁶¹⁶⁹ is an apocalyptic number.

It is an amenable number.

86169 is a deficient number, since it is larger than the sum of its proper divisors (28727).

86169 is a wasteful number, since it uses less digits than its factorization.

86169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28726.

The product of its digits is 2592, while the sum is 30.

The square root of 86169 is about 293.5455671612. The cubic root of 86169 is about 44.1689441490.

Subtracting 86169 from its reverse (96168), we obtain a palindrome (9999).

The spelling of 86169 in words is "eighty-six thousand, one hundred sixty-nine".