239972243 has 8 divisors (see below), whose sum is σ = 278011488. Its totient is φ = 202872384.

The previous prime is 239972203. The next prime is 239972251. The reversal of 239972243 is 342279932.

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

It is a cyclic number.

It is not a de Polignac number, because 239972243 - 2²⁰ = 238923667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 239972243.

It is not an unprimeable number, because it can be changed into a prime (239972203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234296 + ... + 235317.

It is an arithmetic number, because the mean of its divisors is an integer number (34751436).

Almost surely, 2^239972243 is an apocalyptic number.

239972243 is a deficient number, since it is larger than the sum of its proper divisors (38039245).

239972243 is an equidigital number, since it uses as much as digits as its factorization.

239972243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469693.

The product of its digits is 163296, while the sum is 41.

The square root of 239972243 is about 15491.0375056030. The cubic root of 239972243 is about 621.4225426414.

The spelling of 239972243 in words is "two hundred thirty-nine million, nine hundred seventy-two thousand, two hundred forty-three".