109349787 has 4 divisors (see below), whose sum is σ = 145799720. Its totient is φ = 72899856.

The previous prime is 109349783. The next prime is 109349789. The reversal of 109349787 is 787943901.

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

It is not a de Polignac number, because 109349787 - 2² = 109349783 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109349783) 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, 18224962 + ... + 18224967.

It is an arithmetic number, because the mean of its divisors is an integer number (36449930).

Almost surely, 2^109349787 is an apocalyptic number.

109349787 is a deficient number, since it is larger than the sum of its proper divisors (36449933).

109349787 is an equidigital number, since it uses as much as digits as its factorization.

109349787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36449932.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 109349787 is about 10457.0448502433. The cubic root of 109349787 is about 478.1960456433.

The spelling of 109349787 in words is "one hundred nine million, three hundred forty-nine thousand, seven hundred eighty-seven".