108869 has 2 divisors, whose sum is σ = 108870. Its totient is φ = 108868.

The previous prime is 108863. The next prime is 108877. The reversal of 108869 is 968801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96100 + 12769 = 310^2 + 113^2 .

It is an emirp because it is prime and its reverse (968801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 108869 - 2¹² = 104773 is a prime.

It is a super-2 number, since 2×108869² = 23704918322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54434 + 54435.

It is an arithmetic number, because the mean of its divisors is an integer number (54435).

2¹⁰⁸⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

108869 is a deficient number, since it is larger than the sum of its proper divisors (1).

108869 is an equidigital number, since it uses as much as digits as its factorization.

108869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 108869 is about 329.9530269599. The cubic root of 108869 is about 47.7494174979.

The spelling of 108869 in words is "one hundred eight thousand, eight hundred sixty-nine".