3946191 has 4 divisors (see below), whose sum is σ = 5261592. Its totient is φ = 2630792.

The previous prime is 3946183. The next prime is 3946211. The reversal of 3946191 is 1916493.

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 3946191 - 2³ = 3946183 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946141) 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, 657696 + ... + 657701.

It is an arithmetic number, because the mean of its divisors is an integer number (1315398).

Almost surely, 2^3946191 is an apocalyptic number.

3946191 is a deficient number, since it is larger than the sum of its proper divisors (1315401).

3946191 is a wasteful number, since it uses less digits than its factorization.

3946191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315400.

The product of its digits is 5832, while the sum is 33.

The square root of 3946191 is about 1986.5022023647. The cubic root of 3946191 is about 158.0250854792.

The spelling of 3946191 in words is "three million, nine hundred forty-six thousand, one hundred ninety-one".