3713509 has 4 divisors (see below), whose sum is σ = 3717580. Its totient is φ = 3709440.

The previous prime is 3713491. The next prime is 3713533. The reversal of 3713509 is 9053173.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9053173 = 379 ⋅23887.

It can be written as a sum of positive squares in 2 ways, for example, as 748225 + 2965284 = 865^2 + 1722^2 .

It is a cyclic number.

It is not a de Polignac number, because 3713509 - 2⁵ = 3713477 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3713309) 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, 37 + ... + 2725.

It is an arithmetic number, because the mean of its divisors is an integer number (929395).

Almost surely, 2^3713509 is an apocalyptic number.

It is an amenable number.

3713509 is a deficient number, since it is larger than the sum of its proper divisors (4071).

3713509 is a wasteful number, since it uses less digits than its factorization.

3713509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 3713509 is about 1927.0467041564. The cubic root of 3713509 is about 154.8560439352.

The spelling of 3713509 in words is "three million, seven hundred thirteen thousand, five hundred nine".