3966001 has 8 divisors (see below), whose sum is σ = 4362624. Its totient is φ = 3582480.

The previous prime is 3965963. The next prime is 3966007. The reversal of 3966001 is 1006693.

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 3966001 - 2¹⁵ = 3933233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3966007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2635 + ... + 3856.

It is an arithmetic number, because the mean of its divisors is an integer number (545328).

Almost surely, 2^3966001 is an apocalyptic number.

It is an amenable number.

3966001 is a deficient number, since it is larger than the sum of its proper divisors (396623).

3966001 is a wasteful number, since it uses less digits than its factorization.

3966001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 3966001 is about 1991.4821113934. The cubic root of 3966001 is about 158.2890744870.

The spelling of 3966001 in words is "three million, nine hundred sixty-six thousand, one".