239745889 has 2 divisors, whose sum is σ = 239745890. Its totient is φ = 239745888.

The previous prime is 239745853. The next prime is 239745893. The reversal of 239745889 is 988547932.

239745889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214915600 + 24830289 = 14660^2 + 4983^2 .

It is a cyclic number.

It is not a de Polignac number, because 239745889 - 2¹⁹ = 239221601 is a prime.

It is not a weakly prime, because it can be changed into another prime (239745809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119872944 + 119872945.

It is an arithmetic number, because the mean of its divisors is an integer number (119872945).

Almost surely, 2^239745889 is an apocalyptic number.

It is an amenable number.

239745889 is a deficient number, since it is larger than the sum of its proper divisors (1).

239745889 is an equidigital number, since it uses as much as digits as its factorization.

239745889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 55.

The square root of 239745889 is about 15483.7298155193. The cubic root of 239745889 is about 621.2270954152.

The spelling of 239745889 in words is "two hundred thirty-nine million, seven hundred forty-five thousand, eight hundred eighty-nine".