239252861 has 2 divisors, whose sum is σ = 239252862. Its totient is φ = 239252860.

The previous prime is 239252837. The next prime is 239252869. The reversal of 239252861 is 168252932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224430361 + 14822500 = 14981^2 + 3850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239252861 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 (239252869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119626430 + 119626431.

It is an arithmetic number, because the mean of its divisors is an integer number (119626431).

Almost surely, 2^239252861 is an apocalyptic number.

It is an amenable number.

239252861 is a deficient number, since it is larger than the sum of its proper divisors (1).

239252861 is an equidigital number, since it uses as much as digits as its factorization.

239252861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 38.

The square root of 239252861 is about 15467.8007809772. The cubic root of 239252861 is about 620.8009601345.

The spelling of 239252861 in words is "two hundred thirty-nine million, two hundred fifty-two thousand, eight hundred sixty-one".