109783 has 4 divisors (see below), whose sum is σ = 110448. Its totient is φ = 109120.

The previous prime is 109751. The next prime is 109789. The reversal of 109783 is 387901.

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: 387901 = 41 ⋅9461.

It is a cyclic number.

It is not a de Polignac number, because 109783 - 2⁵ = 109751 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135 + ... + 487.

It is an arithmetic number, because the mean of its divisors is an integer number (27612).

2¹⁰⁹⁷⁸³ is an apocalyptic number.

109783 is a deficient number, since it is larger than the sum of its proper divisors (665).

109783 is an equidigital number, since it uses as much as digits as its factorization.

109783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 109783 is about 331.3351777279. The cubic root of 109783 is about 47.8826706141.

The spelling of 109783 in words is "one hundred nine thousand, seven hundred eighty-three".