109887 has 4 divisors (see below), whose sum is σ = 146520. Its totient is φ = 73256.

The previous prime is 109883. The next prime is 109891. The reversal of 109887 is 788901.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (109883) and next prime (109891).

It is a cyclic number.

It is not a de Polignac number, because 109887 - 2² = 109883 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109883) 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, 18312 + ... + 18317.

It is an arithmetic number, because the mean of its divisors is an integer number (36630).

2¹⁰⁹⁸⁸⁷ is an apocalyptic number.

109887 is a deficient number, since it is larger than the sum of its proper divisors (36633).

109887 is an equidigital number, since it uses as much as digits as its factorization.

109887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36632.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 109887 is about 331.4920813534. The cubic root of 109887 is about 47.8977859661.

The spelling of 109887 in words is "one hundred nine thousand, eight hundred eighty-seven".