109928143 has 4 divisors (see below), whose sum is σ = 118384168. Its totient is φ = 101472120.

The previous prime is 109928131. The next prime is 109928149. The reversal of 109928143 is 341829901.

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 109928143 - 2⁵ = 109928111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109928149) 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, 4227993 + ... + 4228018.

It is an arithmetic number, because the mean of its divisors is an integer number (29596042).

Almost surely, 2^109928143 is an apocalyptic number.

109928143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

109928143 is a deficient number, since it is larger than the sum of its proper divisors (8456025).

109928143 is an equidigital number, since it uses as much as digits as its factorization.

109928143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8456024.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 109928143 is about 10484.6622740077. The cubic root of 109928143 is about 479.0376305384.

The spelling of 109928143 in words is "one hundred nine million, nine hundred twenty-eight thousand, one hundred forty-three".