Is 440213909 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 440 213 909 is a prime number.
Indeed, the definition of a prime numbers is to have exactly two distinct positive divisors, 1 and itself. A number is a divisor of another number when the remainder of Euclid’s division of the second one by the first one is zero. Concerning the number 440 213 909, the only two divisors are 1 and 440 213 909. Therefore 440 213 909 is a prime number.
As a consequence, 440 213 909 is only a multiple of 1 and 440 213 909.
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Since 440213909 is a prime number, 440213909 is also a deficient number, that is to say 440213909 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 440213909 without 440213909 itself (that is 1, by definition!).