3980491717 has 2 divisors, whose sum is σ = 3980491718. Its totient is φ = 3980491716.

The previous prime is 3980491663. The next prime is 3980491721. The reversal of 3980491717 is 7171940893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3919511236 + 60980481 = 62606^2 + 7809^2 .

It is a cyclic number.

It is not a de Polignac number, because 3980491717 - 2⁷ = 3980491589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3980491787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1990245858 + 1990245859.

It is an arithmetic number, because the mean of its divisors is an integer number (1990245859).

Almost surely, 2^3980491717 is an apocalyptic number.

It is an amenable number.

3980491717 is a deficient number, since it is larger than the sum of its proper divisors (1).

3980491717 is an equidigital number, since it uses as much as digits as its factorization.

3980491717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 3980491717 is about 63091.1381812058. The cubic root of 3980491717 is about 1584.8162228583.

The spelling of 3980491717 in words is "three billion, nine hundred eighty million, four hundred ninety-one thousand, seven hundred seventeen".