5243409 has 6 divisors (see below), whose sum is σ = 7573826. Its totient is φ = 3495600.

The previous prime is 5243393. The next prime is 5243417. The reversal of 5243409 is 9043425.

It can be written as a sum of positive squares in only one way, i.e., 2772225 + 2471184 = 1665^2 + 1572^2 .

It is not a de Polignac number, because 5243409 - 2⁴ = 5243393 is a prime.

It is a d-powerful number, because it can be written as 5 + 2⁹ + 4¹⁰ + 3 + 4¹¹ + 0 + 9 .

It is a Duffinian number.

5243409 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5243419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 291292 + ... + 291309.

Almost surely, 2^5243409 is an apocalyptic number.

It is an amenable number.

5243409 is a deficient number, since it is larger than the sum of its proper divisors (2330417).

5243409 is a wasteful number, since it uses less digits than its factorization.

5243409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582607 (or 582604 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 5243409 is about 2289.8491216672. The cubic root of 5243409 is about 173.7285700672.

The spelling of 5243409 in words is "five million, two hundred forty-three thousand, four hundred nine".