3966901 has 4 divisors (see below), whose sum is σ = 3971052. Its totient is φ = 3962752.

The previous prime is 3966889. The next prime is 3966913. The reversal of 3966901 is 1096693.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (3966889) and next prime (3966913).

It can be written as a sum of positive squares in 2 ways, for example, as 3062500 + 904401 = 1750^2 + 951^2 .

It is a cyclic number.

It is not a de Polignac number, because 3966901 - 2⁷ = 3966773 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 (3966961) 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 3 ways as a sum of consecutive naturals, for example, 165 + ... + 2821.

It is an arithmetic number, because the mean of its divisors is an integer number (992763).

Almost surely, 2^3966901 is an apocalyptic number.

It is an amenable number.

3966901 is a deficient number, since it is larger than the sum of its proper divisors (4151).

3966901 is a wasteful number, since it uses less digits than its factorization.

3966901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 3966901 is about 1991.7080609366. The cubic root of 3966901 is about 158.3010470333.

The spelling of 3966901 in words is "three million, nine hundred sixty-six thousand, nine hundred one".