109118917 has 8 divisors (see below), whose sum is σ = 112075992. Its totient is φ = 106176000.

The previous prime is 109118899. The next prime is 109118941. The reversal of 109118917 is 719811901.

It is a Cunningham number, because it is equal to 10446²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1602756 + 107516161 = 1266^2 + 10369^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109118917 - 2¹⁵ = 109086149 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 (109118117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13123 + ... + 19759.

It is an arithmetic number, because the mean of its divisors is an integer number (14009499).

Almost surely, 2^109118917 is an apocalyptic number.

It is an amenable number.

109118917 is a deficient number, since it is larger than the sum of its proper divisors (2957075).

109118917 is an equidigital number, since it uses as much as digits as its factorization.

109118917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7079.

The product of its (nonzero) digits is 4536, while the sum is 37.

The square root of 109118917 is about 10446.0000478652. Note that the first 4 decimals coincide. The cubic root of 109118917 is about 477.8592703831.

The spelling of 109118917 in words is "one hundred nine million, one hundred eighteen thousand, nine hundred seventeen".