109867 has 4 divisors (see below), whose sum is σ = 110656. Its totient is φ = 109080.

The previous prime is 109859. The next prime is 109873. The reversal of 109867 is 768901.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 768901 = 7 ⋅109843.

It is a cyclic number.

It is not a de Polignac number, because 109867 - 2³ = 109859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109807) 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, 123 + ... + 484.

It is an arithmetic number, because the mean of its divisors is an integer number (27664).

2¹⁰⁹⁸⁶⁷ is an apocalyptic number.

109867 is a deficient number, since it is larger than the sum of its proper divisors (789).

109867 is an equidigital number, since it uses as much as digits as its factorization.

109867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 109867 is about 331.4619133475. The cubic root of 109867 is about 47.8948799086.

The spelling of 109867 in words is "one hundred nine thousand, eight hundred sixty-seven".