239849 has 2 divisors, whose sum is σ = 239850. Its totient is φ = 239848.

The previous prime is 239843. The next prime is 239851. The reversal of 239849 is 948932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235225 + 4624 = 485^2 + 68^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239849 is a prime.

Together with 239851, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119924 + 119925.

It is an arithmetic number, because the mean of its divisors is an integer number (119925).

2²³⁹⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

239849 is a deficient number, since it is larger than the sum of its proper divisors (1).

239849 is an equidigital number, since it uses as much as digits as its factorization.

239849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 35.

The square root of 239849 is about 489.7438105786. The cubic root of 239849 is about 62.1316142707.

The spelling of 239849 in words is "two hundred thirty-nine thousand, eight hundred forty-nine".