239993317 has 2 divisors, whose sum is σ = 239993318. Its totient is φ = 239993316.

The previous prime is 239993311. The next prime is 239993321. The reversal of 239993317 is 713399932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124344801 + 115648516 = 11151^2 + 10754^2 .

It is a cyclic number.

It is not a de Polignac number, because 239993317 - 2¹⁵ = 239960549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239993311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119996658 + 119996659.

It is an arithmetic number, because the mean of its divisors is an integer number (119996659).

Almost surely, 2^239993317 is an apocalyptic number.

It is an amenable number.

239993317 is a deficient number, since it is larger than the sum of its proper divisors (1).

239993317 is an equidigital number, since it uses as much as digits as its factorization.

239993317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 275562, while the sum is 46.

The square root of 239993317 is about 15491.7176904306. The cubic root of 239993317 is about 621.4407329053.

The spelling of 239993317 in words is "two hundred thirty-nine million, nine hundred ninety-three thousand, three hundred seventeen".