109435843 has 4 divisors (see below), whose sum is σ = 119384568. Its totient is φ = 99487120.

The previous prime is 109435813. The next prime is 109435853. The reversal of 109435843 is 348534901.

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 109435843 - 2⁵ = 109435811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109435813) 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, 4974346 + ... + 4974367.

It is an arithmetic number, because the mean of its divisors is an integer number (29846142).

Almost surely, 2^109435843 is an apocalyptic number.

109435843 is a deficient number, since it is larger than the sum of its proper divisors (9948725).

109435843 is an equidigital number, since it uses as much as digits as its factorization.

109435843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9948724.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 109435843 is about 10461.1587790263. The cubic root of 109435843 is about 478.3214561862.

The spelling of 109435843 in words is "one hundred nine million, four hundred thirty-five thousand, eight hundred forty-three".