109808939 has 4 divisors (see below), whose sum is σ = 110280456. Its totient is φ = 109337424.

The previous prime is 109808927. The next prime is 109808953. The reversal of 109808939 is 939808901.

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 109808939 - 2⁸ = 109808683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109808893 and 109808902.

It is not an unprimeable number, because it can be changed into a prime (109808989) 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, 235409 + ... + 235874.

It is an arithmetic number, because the mean of its divisors is an integer number (27570114).

Almost surely, 2^109808939 is an apocalyptic number.

109808939 is a deficient number, since it is larger than the sum of its proper divisors (471517).

109808939 is an equidigital number, since it uses as much as digits as its factorization.

109808939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471516.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 109808939 is about 10478.9760473054. The cubic root of 109808939 is about 478.8644147960.

The spelling of 109808939 in words is "one hundred nine million, eight hundred eight thousand, nine hundred thirty-nine".