3881986 has 8 divisors (see below), whose sum is σ = 6076224. Its totient is φ = 1856580.

The previous prime is 3881959. The next prime is 3881987. The reversal of 3881986 is 6891883.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (3881987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42150 + ... + 42241.

It is an arithmetic number, because the mean of its divisors is an integer number (759528).

Almost surely, 2^3881986 is an apocalyptic number.

3881986 is a deficient number, since it is larger than the sum of its proper divisors (2194238).

3881986 is a wasteful number, since it uses less digits than its factorization.

3881986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84416.

The product of its digits is 82944, while the sum is 43.

The square root of 3881986 is about 1970.2756152376. The cubic root of 3881986 is about 157.1633659970.

The spelling of 3881986 in words is "three million, eight hundred eighty-one thousand, nine hundred eighty-six".