4340509 has 4 divisors (see below), whose sum is σ = 4352704. Its totient is φ = 4328316.

The previous prime is 4340503. The next prime is 4340521. The reversal of 4340509 is 9050434.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9050434 = 2 ⋅4525217.

It is a cyclic number.

It is not a de Polignac number, because 4340509 - 2⁵ = 4340477 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 (4340503) 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, 5547 + ... + 6280.

It is an arithmetic number, because the mean of its divisors is an integer number (1088176).

Almost surely, 2^4340509 is an apocalyptic number.

It is an amenable number.

4340509 is a deficient number, since it is larger than the sum of its proper divisors (12195).

4340509 is a wasteful number, since it uses less digits than its factorization.

4340509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12194.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 4340509 is about 2083.3888259276. The cubic root of 4340509 is about 163.1223816513.

The spelling of 4340509 in words is "four million, three hundred forty thousand, five hundred nine".