109440879 has 4 divisors (see below), whose sum is σ = 145921176. Its totient is φ = 72960584.

The previous prime is 109440869. The next prime is 109440901. The reversal of 109440879 is 978044901.

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 109440879 - 2¹¹ = 109438831 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109440879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109440829) 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, 18240144 + ... + 18240149.

It is an arithmetic number, because the mean of its divisors is an integer number (36480294).

Almost surely, 2^109440879 is an apocalyptic number.

109440879 is a deficient number, since it is larger than the sum of its proper divisors (36480297).

109440879 is an equidigital number, since it uses as much as digits as its factorization.

109440879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36480296.

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 109440879 is about 10461.3994761695. The cubic root of 109440879 is about 478.3287931787.

The spelling of 109440879 in words is "one hundred nine million, four hundred forty thousand, eight hundred seventy-nine".