109147911 has 4 divisors (see below), whose sum is σ = 145530552. Its totient is φ = 72765272.

The previous prime is 109147879. The next prime is 109147919. The reversal of 109147911 is 119741901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 119741901 = 3 ⋅39913967.

It is a cyclic number.

It is not a de Polignac number, because 109147911 - 2⁵ = 109147879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109147919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18191316 + ... + 18191321.

It is an arithmetic number, because the mean of its divisors is an integer number (36382638).

Almost surely, 2^109147911 is an apocalyptic number.

109147911 is a deficient number, since it is larger than the sum of its proper divisors (36382641).

109147911 is an equidigital number, since it uses as much as digits as its factorization.

109147911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36382640.

The product of its (nonzero) digits is 2268, while the sum is 33.

The square root of 109147911 is about 10447.3877596268. The cubic root of 109147911 is about 477.9015906490.

Multiplying 109147911 by its sum of digits (33), we get a palindrome (3601881063).

The spelling of 109147911 in words is "one hundred nine million, one hundred forty-seven thousand, nine hundred eleven".