Is 40377439 a prime number?
It is possible to find out using mathematical methods whether a given integer is a prime number or not.
Yes, 40 377 439 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 40 377 439, the only two divisors are 1 and 40 377 439. Therefore 40 377 439 is a prime number.
As a consequence, 40 377 439 is only a multiple of 1 and 40 377 439.
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Since 40377439 is a prime number, 40377439 is also a deficient number, that is to say 40377439 is a natural integer that is strictly larger than the sum of its proper divisors, i.e., the divisors of 40377439 without 40377439 itself (that is 1, by definition!).