3966995 has 4 divisors (see below), whose sum is σ = 4760400. Its totient is φ = 3173592.

The previous prime is 3966961. The next prime is 3967027. The reversal of 3966995 is 5996693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5996693 = 223 ⋅26891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3966995 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396695 + ... + 396704.

It is an arithmetic number, because the mean of its divisors is an integer number (1190100).

Almost surely, 2^3966995 is an apocalyptic number.

3966995 is a deficient number, since it is larger than the sum of its proper divisors (793405).

3966995 is an equidigital number, since it uses as much as digits as its factorization.

3966995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793404.

The product of its digits is 393660, while the sum is 47.

The square root of 3966995 is about 1991.7316586328. The cubic root of 3966995 is about 158.3022973948.

The spelling of 3966995 in words is "three million, nine hundred sixty-six thousand, nine hundred ninety-five".