109384991 has 6 divisors (see below), whose sum is σ = 111989880. Its totient is φ = 106839348.

The previous prime is 109384969. The next prime is 109384993. The reversal of 109384991 is 199483901.

It is a de Polignac number, because none of the positive numbers 2^k-109384991 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 (109384993) 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 5 ways as a sum of consecutive naturals, for example, 27731 + ... + 31428.

It is an arithmetic number, because the mean of its divisors is an integer number (18664980).

Almost surely, 2^109384991 is an apocalyptic number.

109384991 is a deficient number, since it is larger than the sum of its proper divisors (2604889).

109384991 is an frugal number, since it uses more digits than its factorization.

109384991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59245 (or 59202 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 109384991 is about 10458.7279819297. The cubic root of 109384991 is about 478.2473568463.

The spelling of 109384991 in words is "one hundred nine million, three hundred eighty-four thousand, nine hundred ninety-one".