109405171 has 4 divisors (see below), whose sum is σ = 111038152. Its totient is φ = 107772192.

The previous prime is 109405151. The next prime is 109405193. The reversal of 109405171 is 171504901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171504901 = 5351 ⋅32051.

It is a cyclic number.

It is not a de Polignac number, because 109405171 - 2²⁵ = 75850739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109405151) 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, 816390 + ... + 816523.

It is an arithmetic number, because the mean of its divisors is an integer number (27759538).

Almost surely, 2^109405171 is an apocalyptic number.

109405171 is a deficient number, since it is larger than the sum of its proper divisors (1632981).

109405171 is an equidigital number, since it uses as much as digits as its factorization.

109405171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632980.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 109405171 is about 10459.6926819099. The cubic root of 109405171 is about 478.2767650193.

The spelling of 109405171 in words is "one hundred nine million, four hundred five thousand, one hundred seventy-one".