109489843 has 4 divisors (see below), whose sum is σ = 115930440. Its totient is φ = 103049248.

The previous prime is 109489841. The next prime is 109489873. The reversal of 109489843 is 348984901.

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

It is a cyclic number.

It is not a de Polignac number, because 109489843 - 2¹ = 109489841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109489793 and 109489802.

It is not an unprimeable number, because it can be changed into a prime (109489841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3220273 + ... + 3220306.

It is an arithmetic number, because the mean of its divisors is an integer number (28982610).

Almost surely, 2^109489843 is an apocalyptic number.

109489843 is a deficient number, since it is larger than the sum of its proper divisors (6440597).

109489843 is an equidigital number, since it uses as much as digits as its factorization.

109489843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6440596.

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

The square root of 109489843 is about 10463.7394367406. The cubic root of 109489843 is about 478.4001175299.

The spelling of 109489843 in words is "one hundred nine million, four hundred eighty-nine thousand, eight hundred forty-three".