3866961 has 16 divisors (see below), whose sum is σ = 5961600. Its totient is φ = 2183808.

The previous prime is 3866957. The next prime is 3866963. The reversal of 3866961 is 1696683.

It is a happy number.

It is not a de Polignac number, because 3866961 - 2² = 3866957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3866963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835 + ... + 2903.

It is an arithmetic number, because the mean of its divisors is an integer number (372600).

Almost surely, 2^3866961 is an apocalyptic number.

It is an amenable number.

3866961 is a deficient number, since it is larger than the sum of its proper divisors (2094639).

3866961 is a wasteful number, since it uses less digits than its factorization.

3866961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168.

The product of its digits is 46656, while the sum is 39.

The square root of 3866961 is about 1966.4590003354. The cubic root of 3866961 is about 156.9603399626.

The spelling of 3866961 in words is "three million, eight hundred sixty-six thousand, nine hundred sixty-one".