235889 has 2 divisors, whose sum is σ = 235890. Its totient is φ = 235888.

The previous prime is 235877. The next prime is 235891. The reversal of 235889 is 988532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187489 + 48400 = 433^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 235889 - 2¹⁶ = 170353 is a prime.

Together with 235891, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (235849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117944 + 117945.

It is an arithmetic number, because the mean of its divisors is an integer number (117945).

2²³⁵⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

235889 is a deficient number, since it is larger than the sum of its proper divisors (1).

235889 is an equidigital number, since it uses as much as digits as its factorization.

235889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 235889 is about 485.6840536810. The cubic root of 235889 is about 61.7877759535.

The spelling of 235889 in words is "two hundred thirty-five thousand, eight hundred eighty-nine".