3986699 has 2 divisors, whose sum is σ = 3986700. Its totient is φ = 3986698.

The previous prime is 3986677. The next prime is 3986711. The reversal of 3986699 is 9966893.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3986699 - 2²⁰ = 2938123 is a prime.

It is not a weakly prime, because it can be changed into another prime (3986669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1993349 + 1993350.

It is an arithmetic number, because the mean of its divisors is an integer number (1993350).

Almost surely, 2^3986699 is an apocalyptic number.

3986699 is a deficient number, since it is larger than the sum of its proper divisors (1).

3986699 is an equidigital number, since it uses as much as digits as its factorization.

3986699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 50.

The square root of 3986699 is about 1996.6719810725. The cubic root of 3986699 is about 158.5639596314.

The spelling of 3986699 in words is "three million, nine hundred eighty-six thousand, six hundred ninety-nine".