108779143 has 4 divisors (see below), whose sum is σ = 118668168. Its totient is φ = 98890120.

The previous prime is 108779117. The next prime is 108779147. The reversal of 108779143 is 341977801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341977801 = 11 ⋅31088891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108779143 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 108779096 and 108779105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108779147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4944496 + ... + 4944517.

It is an arithmetic number, because the mean of its divisors is an integer number (29667042).

Almost surely, 2^108779143 is an apocalyptic number.

108779143 is a deficient number, since it is larger than the sum of its proper divisors (9889025).

108779143 is an equidigital number, since it uses as much as digits as its factorization.

108779143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9889024.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 108779143 is about 10429.7240136065. The cubic root of 108779143 is about 477.3627693325.

The spelling of 108779143 in words is "one hundred eight million, seven hundred seventy-nine thousand, one hundred forty-three".