500342309 has 2 divisors, whose sum is σ = 500342310. Its totient is φ = 500342308.

The previous prime is 500342291. The next prime is 500342321. The reversal of 500342309 is 903243005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 474281284 + 26061025 = 21778^2 + 5105^2 .

It is a cyclic number.

It is not a de Polignac number, because 500342309 - 2¹² = 500338213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500342369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250171154 + 250171155.

It is an arithmetic number, because the mean of its divisors is an integer number (250171155).

Almost surely, 2^500342309 is an apocalyptic number.

It is an amenable number.

500342309 is a deficient number, since it is larger than the sum of its proper divisors (1).

500342309 is an equidigital number, since it uses as much as digits as its factorization.

500342309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 500342309 is about 22368.3327273179. The cubic root of 500342309 is about 793.8816118877.

The spelling of 500342309 in words is "five hundred million, three hundred forty-two thousand, three hundred nine".