109111465 has 4 divisors (see below), whose sum is σ = 130933764. Its totient is φ = 87289168.

The previous prime is 109111459. The next prime is 109111469. The reversal of 109111465 is 564111901.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75134224 + 33977241 = 8668^2 + 5829^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109111465 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109111469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10911142 + ... + 10911151.

It is an arithmetic number, because the mean of its divisors is an integer number (32733441).

Almost surely, 2^109111465 is an apocalyptic number.

It is an amenable number.

109111465 is a deficient number, since it is larger than the sum of its proper divisors (21822299).

109111465 is an equidigital number, since it uses as much as digits as its factorization.

109111465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21822298.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 109111465 is about 10445.6433502202. The cubic root of 109111465 is about 477.8483920727.

The spelling of 109111465 in words is "one hundred nine million, one hundred eleven thousand, four hundred sixty-five".