3988717 has 2 divisors, whose sum is σ = 3988718. Its totient is φ = 3988716.

The previous prime is 3988703. The next prime is 3988753. The reversal of 3988717 is 7178893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3944196 + 44521 = 1986^2 + 211^2 .

It is a cyclic number.

It is not a de Polignac number, because 3988717 - 2¹¹ = 3986669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3985717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1994358 + 1994359.

It is an arithmetic number, because the mean of its divisors is an integer number (1994359).

Almost surely, 2^3988717 is an apocalyptic number.

It is an amenable number.

3988717 is a deficient number, since it is larger than the sum of its proper divisors (1).

3988717 is an equidigital number, since it uses as much as digits as its factorization.

3988717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 43.

The square root of 3988717 is about 1997.1772580319. The cubic root of 3988717 is about 158.5907092552.

The spelling of 3988717 in words is "three million, nine hundred eighty-eight thousand, seven hundred seventeen".