3946691 has 4 divisors (see below), whose sum is σ = 4510512. Its totient is φ = 3382872.

The previous prime is 3946681. The next prime is 3946721. The reversal of 3946691 is 1966493.

3946691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3946691 - 2¹⁴ = 3930307 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (3946681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281900 + ... + 281913.

It is an arithmetic number, because the mean of its divisors is an integer number (1127628).

Almost surely, 2^3946691 is an apocalyptic number.

3946691 is a deficient number, since it is larger than the sum of its proper divisors (563821).

3946691 is an equidigital number, since it uses as much as digits as its factorization.

3946691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563820.

The product of its digits is 34992, while the sum is 38.

The square root of 3946691 is about 1986.6280477231. The cubic root of 3946691 is about 158.0317593583.

The spelling of 3946691 in words is "three million, nine hundred forty-six thousand, six hundred ninety-one".