109723839 has 4 divisors (see below), whose sum is σ = 146298456. Its totient is φ = 73149224.

The previous prime is 109723813. The next prime is 109723847. The reversal of 109723839 is 938327901.

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 109723839 - 2⁸ = 109723583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109723839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109723139) 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, 18287304 + ... + 18287309.

It is an arithmetic number, because the mean of its divisors is an integer number (36574614).

Almost surely, 2^109723839 is an apocalyptic number.

109723839 is a deficient number, since it is larger than the sum of its proper divisors (36574617).

109723839 is an equidigital number, since it uses as much as digits as its factorization.

109723839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36574616.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 109723839 is about 10474.9147490564. The cubic root of 109723839 is about 478.7406789878.

The spelling of 109723839 in words is "one hundred nine million, seven hundred twenty-three thousand, eight hundred thirty-nine".