239144689 has 4 divisors (see below), whose sum is σ = 273308224. Its totient is φ = 204981156.

The previous prime is 239144651. The next prime is 239144693. The reversal of 239144689 is 986441932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 239144689 - 2¹⁵ = 239111921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (239144699) 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 in 3 ways as a sum of consecutive naturals, for example, 17081757 + ... + 17081770.

It is an arithmetic number, because the mean of its divisors is an integer number (68327056).

Almost surely, 2^239144689 is an apocalyptic number.

It is an amenable number.

239144689 is a deficient number, since it is larger than the sum of its proper divisors (34163535).

239144689 is an equidigital number, since it uses as much as digits as its factorization.

239144689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34163534.

The product of its digits is 373248, while the sum is 46.

The square root of 239144689 is about 15464.3037023980. The cubic root of 239144689 is about 620.7073863255.

The spelling of 239144689 in words is "two hundred thirty-nine million, one hundred forty-four thousand, six hundred eighty-nine".