9240509 has 2 divisors, whose sum is σ = 9240510. Its totient is φ = 9240508.

The previous prime is 9240467. The next prime is 9240523. The reversal of 9240509 is 9050429.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6775609 + 2464900 = 2603^2 + 1570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9240509 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9240409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4620254 + 4620255.

It is an arithmetic number, because the mean of its divisors is an integer number (4620255).

Almost surely, 2^9240509 is an apocalyptic number.

It is an amenable number.

9240509 is a deficient number, since it is larger than the sum of its proper divisors (1).

9240509 is an equidigital number, since it uses as much as digits as its factorization.

9240509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 9240509 is about 3039.8205539143. The cubic root of 9240509 is about 209.8450027855.

The spelling of 9240509 in words is "nine million, two hundred forty thousand, five hundred nine".