109105247 has 4 divisors (see below), whose sum is σ = 109182096. Its totient is φ = 109028400.

The previous prime is 109105237. The next prime is 109105253. The reversal of 109105247 is 742501901.

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 109105247 - 2⁴ = 109105231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109105207) 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, 36254 + ... + 39147.

It is an arithmetic number, because the mean of its divisors is an integer number (27295524).

Almost surely, 2^109105247 is an apocalyptic number.

109105247 is a deficient number, since it is larger than the sum of its proper divisors (76849).

109105247 is an equidigital number, since it uses as much as digits as its factorization.

109105247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76848.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 109105247 is about 10445.3457099322. The cubic root of 109105247 is about 477.8393147567.

The spelling of 109105247 in words is "one hundred nine million, one hundred five thousand, two hundred forty-seven".