109847 has 2 divisors, whose sum is σ = 109848. Its totient is φ = 109846.

The previous prime is 109843. The next prime is 109849. The reversal of 109847 is 748901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109847 - 2² = 109843 is a prime.

Together with 109849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54923 + 54924.

It is an arithmetic number, because the mean of its divisors is an integer number (54924).

2¹⁰⁹⁸⁴⁷ is an apocalyptic number.

109847 is a deficient number, since it is larger than the sum of its proper divisors (1).

109847 is an equidigital number, since it uses as much as digits as its factorization.

109847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 109847 is about 331.4317425957. The cubic root of 109847 is about 47.8919734983.

The spelling of 109847 in words is "one hundred nine thousand, eight hundred forty-seven".