3986486191 has 8 divisors (see below), whose sum is σ = 3997833840. Its totient is φ = 3975151488.

The previous prime is 3986486173. The next prime is 3986486233. The reversal of 3986486191 is 1916846893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3986486191 - 2¹¹ = 3986484143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986486171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1076455 + ... + 1080151.

It is an arithmetic number, because the mean of its divisors is an integer number (499729230).

Almost surely, 2^3986486191 is an apocalyptic number.

3986486191 is a deficient number, since it is larger than the sum of its proper divisors (11347649).

3986486191 is a wasteful number, since it uses less digits than its factorization.

3986486191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6473.

The product of its digits is 2239488, while the sum is 55.

The square root of 3986486191 is about 63138.6267747407. The cubic root of 3986486191 is about 1585.6113821293.

The spelling of 3986486191 in words is "three billion, nine hundred eighty-six million, four hundred eighty-six thousand, one hundred ninety-one".