239368498009 has 9 divisors (see below), whose sum is σ = 245369712829. Its totient is φ = 233510671840.

The previous prime is 239368498007. The next prime is 239368498013. The reversal of 239368498009 is 900894863932.

The square root of 239368498009 is 489253.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 8034433225 + 231334064784 = 89635^2 + 480972^2 .

It is not a de Polignac number, because 239368498009 - 2¹ = 239368498007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239368498007) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20053407 + ... + 20065339.

Almost surely, 2^239368498009 is an apocalyptic number.

239368498009 is the 489253-rd square number.

239368498009 is the 244627-th centered octagonal number.

It is an amenable number.

239368498009 is a deficient number, since it is larger than the sum of its proper divisors (6001214820).

239368498009 is an frugal number, since it uses more digits than its factorization.

239368498009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23948 (or 11974 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 61.

The spelling of 239368498009 in words is "two hundred thirty-nine billion, three hundred sixty-eight million, four hundred ninety-eight thousand, nine".