3509709 has 16 divisors (see below), whose sum is σ = 5493888. Its totient is φ = 1950912.

The previous prime is 3509689. The next prime is 3509711. The reversal of 3509709 is 9079053.

It is not a de Polignac number, because 3509709 - 2⁵ = 3509677 is a prime.

It is a super-3 number, since 3×3509709³ (a number of 21 digits) contains 333 as substring.

3509709 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3509709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3509719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1482 + ... + 3035.

It is an arithmetic number, because the mean of its divisors is an integer number (343368).

Almost surely, 2^3509709 is an apocalyptic number.

It is an amenable number.

3509709 is a deficient number, since it is larger than the sum of its proper divisors (1984179).

3509709 is a wasteful number, since it uses less digits than its factorization.

3509709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4564.

The product of its (nonzero) digits is 8505, while the sum is 33.

The square root of 3509709 is about 1873.4217357552. The cubic root of 3509709 is about 151.9697106081.

The spelling of 3509709 in words is "three million, five hundred nine thousand, seven hundred nine".