3966101 has 4 divisors (see below), whose sum is σ = 3970092. Its totient is φ = 3962112.

The previous prime is 3966091. The next prime is 3966113. The reversal of 3966101 is 1016693.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1016693 = 191 ⋅5323.

It can be written as a sum of positive squares in 2 ways, for example, as 819025 + 3147076 = 905^2 + 1774^2 .

It is a cyclic number.

It is not a de Polignac number, because 3966101 - 2¹⁸ = 3703957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3966121) 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, 821 + ... + 2933.

It is an arithmetic number, because the mean of its divisors is an integer number (992523).

Almost surely, 2^3966101 is an apocalyptic number.

It is an amenable number.

3966101 is a deficient number, since it is larger than the sum of its proper divisors (3991).

3966101 is a wasteful number, since it uses less digits than its factorization.

3966101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 3966101 is about 1991.5072181642. The cubic root of 3966101 is about 158.2904048594.

The spelling of 3966101 in words is "three million, nine hundred sixty-six thousand, one hundred one".