8194143 has 4 divisors (see below), whose sum is σ = 10925528. Its totient is φ = 5462760.

The previous prime is 8194139. The next prime is 8194159. The reversal of 8194143 is 3414918.

It is a happy number.

8194143 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 8194143 - 2² = 8194139 is a prime.

It is a Duffinian number.

8194143 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8194143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8194183) 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, 1365688 + ... + 1365693.

It is an arithmetic number, because the mean of its divisors is an integer number (2731382).

Almost surely, 2^8194143 is an apocalyptic number.

8194143 is a deficient number, since it is larger than the sum of its proper divisors (2731385).

8194143 is a wasteful number, since it uses less digits than its factorization.

8194143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731384.

The product of its digits is 3456, while the sum is 30.

The square root of 8194143 is about 2862.5413534131. The cubic root of 8194143 is about 201.6049446460.

The spelling of 8194143 in words is "eight million, one hundred ninety-four thousand, one hundred forty-three".