3986386 has 4 divisors (see below), whose sum is σ = 5979582. Its totient is φ = 1993192.

The previous prime is 3986377. The next prime is 3986393. The reversal of 3986386 is 6836893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6836893 = 7 ⋅976699.

It can be written as a sum of positive squares in only one way, i.e., 2996361 + 990025 = 1731^2 + 995^2 .

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996595 + ... + 996598.

Almost surely, 2^3986386 is an apocalyptic number.

3986386 is a deficient number, since it is larger than the sum of its proper divisors (1993196).

3986386 is a wasteful number, since it uses less digits than its factorization.

3986386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993195.

The product of its digits is 186624, while the sum is 43.

The square root of 3986386 is about 1996.5935991082. The cubic root of 3986386 is about 158.5598098474.

The spelling of 3986386 in words is "three million, nine hundred eighty-six thousand, three hundred eighty-six".