5240009 has 4 divisors (see below), whose sum is σ = 5259204. Its totient is φ = 5220816.

The previous prime is 5239987. The next prime is 5240017. The reversal of 5240009 is 9000425.

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 2550409 + 2689600 = 1597^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 5240009 - 2⁸ = 5239753 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5240069) 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, 9182 + ... + 9735.

It is an arithmetic number, because the mean of its divisors is an integer number (1314801).

Almost surely, 2^5240009 is an apocalyptic number.

It is an amenable number.

5240009 is a deficient number, since it is larger than the sum of its proper divisors (19195).

5240009 is a wasteful number, since it uses less digits than its factorization.

5240009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19194.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 5240009 is about 2289.1065942852. The cubic root of 5240009 is about 173.6910114956.

The spelling of 5240009 in words is "five million, two hundred forty thousand, nine".