109438849 has 4 divisors (see below), whose sum is σ = 117857236. Its totient is φ = 101020464.

The previous prime is 109438831. The next prime is 109438867. The reversal of 109438849 is 948834901.

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

It is an interprime number because it is at equal distance from previous prime (109438831) and next prime (109438867).

It can be written as a sum of positive squares in 2 ways, for example, as 14025025 + 95413824 = 3745^2 + 9768^2 .

It is a cyclic number.

It is not a de Polignac number, because 109438849 - 2⁹ = 109438337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109438799 and 109438808.

It is not an unprimeable number, because it can be changed into a prime (109438829) 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, 4209174 + ... + 4209199.

It is an arithmetic number, because the mean of its divisors is an integer number (29464309).

Almost surely, 2^109438849 is an apocalyptic number.

It is an amenable number.

109438849 is a deficient number, since it is larger than the sum of its proper divisors (8418387).

109438849 is an equidigital number, since it uses as much as digits as its factorization.

109438849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8418386.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 109438849 is about 10461.3024523718. The cubic root of 109438849 is about 478.3258356810.

The spelling of 109438849 in words is "one hundred nine million, four hundred thirty-eight thousand, eight hundred forty-nine".