239572213 has 2 divisors, whose sum is σ = 239572214. Its totient is φ = 239572212.

The previous prime is 239572187. The next prime is 239572217. The reversal of 239572213 is 312275932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154803364 + 84768849 = 12442^2 + 9207^2 .

It is a cyclic number.

It is not a de Polignac number, because 239572213 - 2⁵ = 239572181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239572217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119786106 + 119786107.

It is an arithmetic number, because the mean of its divisors is an integer number (119786107).

Almost surely, 2^239572213 is an apocalyptic number.

It is an amenable number.

239572213 is a deficient number, since it is larger than the sum of its proper divisors (1).

239572213 is an equidigital number, since it uses as much as digits as its factorization.

239572213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 34.

The square root of 239572213 is about 15478.1204608312. The cubic root of 239572213 is about 621.0770500193.

The spelling of 239572213 in words is "two hundred thirty-nine million, five hundred seventy-two thousand, two hundred thirteen".