3971195 has 4 divisors (see below), whose sum is σ = 4765440. Its totient is φ = 3176952.

The previous prime is 3971167. The next prime is 3971207. The reversal of 3971195 is 5911793.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3971195 is a prime.

It is an Ulam number.

It is an unprimeable number.

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, 397115 + ... + 397124.

It is an arithmetic number, because the mean of its divisors is an integer number (1191360).

Almost surely, 2^3971195 is an apocalyptic number.

3971195 is a deficient number, since it is larger than the sum of its proper divisors (794245).

3971195 is an equidigital number, since it uses as much as digits as its factorization.

3971195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794244.

The product of its digits is 8505, while the sum is 35.

The square root of 3971195 is about 1992.7857386081. The cubic root of 3971195 is about 158.3581444652.

The spelling of 3971195 in words is "three million, nine hundred seventy-one thousand, one hundred ninety-five".