239693489 has 8 divisors (see below), whose sum is σ = 290049408. Its totient is φ = 193366080.

The previous prime is 239693479. The next prime is 239693491. The reversal of 239693489 is 984396932.

239693489 = 185² + 186² + ... + 898².

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 239693489 - 2²⁴ = 222916273 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 239693489.

It is not an unprimeable number, because it can be changed into a prime (239693449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006997 + ... + 1007234.

It is an arithmetic number, because the mean of its divisors is an integer number (36256176).

Almost surely, 2^239693489 is an apocalyptic number.

It is an amenable number.

239693489 is a deficient number, since it is larger than the sum of its proper divisors (50355919).

239693489 is a wasteful number, since it uses less digits than its factorization.

239693489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014255.

The product of its digits is 2519424, while the sum is 53.

The square root of 239693489 is about 15482.0376242922. The cubic root of 239693489 is about 621.1818326694.

The spelling of 239693489 in words is "two hundred thirty-nine million, six hundred ninety-three thousand, four hundred eighty-nine".