3946109 has 4 divisors (see below), whose sum is σ = 4001760. Its totient is φ = 3890460.

The previous prime is 3946051. The next prime is 3946123. The reversal of 3946109 is 9016493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3946109 - 2²⁰ = 2897533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946139) 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, 27719 + ... + 27860.

It is an arithmetic number, because the mean of its divisors is an integer number (1000440).

Almost surely, 2^3946109 is an apocalyptic number.

It is an amenable number.

3946109 is a deficient number, since it is larger than the sum of its proper divisors (55651).

3946109 is an equidigital number, since it uses as much as digits as its factorization.

3946109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55650.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 3946109 is about 1986.4815629650. The cubic root of 3946109 is about 158.0239909092.

The spelling of 3946109 in words is "three million, nine hundred forty-six thousand, one hundred nine".