109247 has 4 divisors (see below), whose sum is σ = 110376. Its totient is φ = 108120.

The previous prime is 109229. The next prime is 109253. The reversal of 109247 is 742901.

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

It is a cyclic number.

It is not a de Polignac number, because 109247 - 2⁸ = 108991 is a prime.

It is a Duffinian number.

It is a plaindrome in base 4 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109267) 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, 404 + ... + 617.

It is an arithmetic number, because the mean of its divisors is an integer number (27594).

2¹⁰⁹²⁴⁷ is an apocalyptic number.

109247 is a deficient number, since it is larger than the sum of its proper divisors (1129).

109247 is a wasteful number, since it uses less digits than its factorization.

109247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 109247 is about 330.5253394220. The cubic root of 109247 is about 47.8046166535.

The spelling of 109247 in words is "one hundred nine thousand, two hundred forty-seven".