239649689 has 8 divisors (see below), whose sum is σ = 242235840. Its totient is φ = 237070800.

The previous prime is 239649643. The next prime is 239649721. The reversal of 239649689 is 986946932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239649689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239649089) 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 7 ways as a sum of consecutive naturals, for example, 87044 + ... + 89754.

It is an arithmetic number, because the mean of its divisors is an integer number (30279480).

Almost surely, 2^239649689 is an apocalyptic number.

It is an amenable number.

239649689 is a deficient number, since it is larger than the sum of its proper divisors (2586151).

239649689 is a wasteful number, since it uses less digits than its factorization.

239649689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3631.

The product of its digits is 5038848, while the sum is 56.

The square root of 239649689 is about 15480.6230171786. The cubic root of 239649689 is about 621.1439934804.

The spelling of 239649689 in words is "two hundred thirty-nine million, six hundred forty-nine thousand, six hundred eighty-nine".