239987329 has 2 divisors, whose sum is σ = 239987330. Its totient is φ = 239987328.

The previous prime is 239987327. The next prime is 239987333. The reversal of 239987329 is 923789932.

239987329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 183331600 + 56655729 = 13540^2 + 7527^2 .

It is a cyclic number.

It is not a de Polignac number, because 239987329 - 2¹ = 239987327 is a prime.

Together with 239987327, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (239987323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119993664 + 119993665.

It is an arithmetic number, because the mean of its divisors is an integer number (119993665).

Almost surely, 2^239987329 is an apocalyptic number.

It is an amenable number.

239987329 is a deficient number, since it is larger than the sum of its proper divisors (1).

239987329 is an equidigital number, since it uses as much as digits as its factorization.

239987329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 52.

The square root of 239987329 is about 15491.5244246652. The cubic root of 239987329 is about 621.4355644030.

The spelling of 239987329 in words is "two hundred thirty-nine million, nine hundred eighty-seven thousand, three hundred twenty-nine".