3912709 has 4 divisors (see below), whose sum is σ = 4047660. Its totient is φ = 3777760.

The previous prime is 3912679. The next prime is 3912719. The reversal of 3912709 is 9072193.

3912709 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 can be written as a sum of positive squares in 2 ways, for example, as 2022084 + 1890625 = 1422^2 + 1375^2 .

It is a cyclic number.

It is not a de Polignac number, because 3912709 - 2¹¹ = 3910661 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

3912709 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3912719) 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, 67432 + ... + 67489.

It is an arithmetic number, because the mean of its divisors is an integer number (1011915).

Almost surely, 2^3912709 is an apocalyptic number.

It is an amenable number.

3912709 is a deficient number, since it is larger than the sum of its proper divisors (134951).

3912709 is a wasteful number, since it uses less digits than its factorization.

3912709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134950.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 3912709 is about 1978.0568748143. The cubic root of 3912709 is about 157.5768869581.

The spelling of 3912709 in words is "three million, nine hundred twelve thousand, seven hundred nine".