3966187 has 4 divisors (see below), whose sum is σ = 4001400. Its totient is φ = 3930976.

The previous prime is 3966173. The next prime is 3966197. The reversal of 3966187 is 7816693.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3966187 - 2⁷ = 3966059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3966197) 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, 17437 + ... + 17662.

It is an arithmetic number, because the mean of its divisors is an integer number (1000350).

Almost surely, 2^3966187 is an apocalyptic number.

3966187 is a deficient number, since it is larger than the sum of its proper divisors (35213).

3966187 is a wasteful number, since it uses less digits than its factorization.

3966187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35212.

The product of its digits is 54432, while the sum is 40.

The square root of 3966187 is about 1991.5288097339. The cubic root of 3966187 is about 158.2915489617.

The spelling of 3966187 in words is "three million, nine hundred sixty-six thousand, one hundred eighty-seven".