3709709 has 4 divisors (see below), whose sum is σ = 3837660. Its totient is φ = 3581760.

The previous prime is 3709703. The next prime is 3709711. The reversal of 3709709 is 9079073.

3709709 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 2184484 + 1525225 = 1478^2 + 1235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3709709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3709703) 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, 63932 + ... + 63989.

It is an arithmetic number, because the mean of its divisors is an integer number (959415).

Almost surely, 2^3709709 is an apocalyptic number.

It is an amenable number.

3709709 is a deficient number, since it is larger than the sum of its proper divisors (127951).

3709709 is a wasteful number, since it uses less digits than its factorization.

3709709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127950.

The product of its (nonzero) digits is 11907, while the sum is 35.

The square root of 3709709 is about 1926.0604871083. The cubic root of 3709709 is about 154.8032049805.

The spelling of 3709709 in words is "three million, seven hundred nine thousand, seven hundred nine".