235439 has 2 divisors, whose sum is σ = 235440. Its totient is φ = 235438.

The previous prime is 235397. The next prime is 235441. The reversal of 235439 is 934532.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235439 is a prime.

Together with 235441, 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 (235489) 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, 117719 + 117720.

It is an arithmetic number, because the mean of its divisors is an integer number (117720).

2²³⁵⁴³⁹ is an apocalyptic number.

235439 is a deficient number, since it is larger than the sum of its proper divisors (1).

235439 is an equidigital number, since it uses as much as digits as its factorization.

235439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 26.

The square root of 235439 is about 485.2205684016. The cubic root of 235439 is about 61.7484605713.

It can be divided in two parts, 2354 and 39, that multiplied together give a triangular number (91806 = T₄₂₈).

The spelling of 235439 in words is "two hundred thirty-five thousand, four hundred thirty-nine".