Is 40436909 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 40 436 909 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 40 436 909, the only two divisors are 1 and 40 436 909. Therefore 40 436 909 is a prime number.
As a consequence, 40 436 909 is only a multiple of 1 and 40 436 909.
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Since 40436909 is a prime number, 40436909 is also a deficient number, that is to say 40436909 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 40436909 without 40436909 itself (that is 1, by definition!).