109807839 has 16 divisors (see below), whose sum is σ = 166141440. Its totient is φ = 71646840.

The previous prime is 109807807. The next prime is 109807861. The reversal of 109807839 is 938708901.

It is not a de Polignac number, because 109807839 - 2⁵ = 109807807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 109807794 and 109807803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109807339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41997 + ... + 44534.

It is an arithmetic number, because the mean of its divisors is an integer number (10383840).

Almost surely, 2^109807839 is an apocalyptic number.

109807839 is a deficient number, since it is larger than the sum of its proper divisors (56333601).

109807839 is an equidigital number, since it uses as much as digits as its factorization.

109807839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86587 (or 86581 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 109807839 is about 10478.9235611297. The cubic root of 109807839 is about 478.8628157986.

The spelling of 109807839 in words is "one hundred nine million, eight hundred seven thousand, eight hundred thirty-nine".