109639347 has 4 divisors (see below), whose sum is σ = 146185800. Its totient is φ = 73092896.

The previous prime is 109639339. The next prime is 109639349. The reversal of 109639347 is 743936901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743936901 = 3 ⋅247978967.

It is a cyclic number.

It is not a de Polignac number, because 109639347 - 2³ = 109639339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109639299 and 109639308.

It is not an unprimeable number, because it can be changed into a prime (109639349) 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, 18273222 + ... + 18273227.

It is an arithmetic number, because the mean of its divisors is an integer number (36546450).

Almost surely, 2^109639347 is an apocalyptic number.

109639347 is a deficient number, since it is larger than the sum of its proper divisors (36546453).

109639347 is an equidigital number, since it uses as much as digits as its factorization.

109639347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36546452.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 109639347 is about 10470.8809085005. The cubic root of 109639347 is about 478.6177639041.

The spelling of 109639347 in words is "one hundred nine million, six hundred thirty-nine thousand, three hundred forty-seven".