3966811 has 8 divisors (see below), whose sum is σ = 4048704. Its totient is φ = 3885960.

The previous prime is 3966803. The next prime is 3966817. The reversal of 3966811 is 1186693.

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 3966811 - 2³ = 3966803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3966817) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 13876 + ... + 14158.

It is an arithmetic number, because the mean of its divisors is an integer number (506088).

Almost surely, 2^3966811 is an apocalyptic number.

3966811 is a deficient number, since it is larger than the sum of its proper divisors (81893).

3966811 is a wasteful number, since it uses less digits than its factorization.

3966811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521.

The product of its digits is 7776, while the sum is 34.

The square root of 3966811 is about 1991.6854671358. The cubic root of 3966811 is about 158.2998498602.

The spelling of 3966811 in words is "three million, nine hundred sixty-six thousand, eight hundred eleven".