243802689 has 8 divisors (see below), whose sum is σ = 350075712. Its totient is φ = 150032400.

The previous prime is 243802679. The next prime is 243802697. The reversal of 243802689 is 986208342.

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

It is not a de Polignac number, because 243802689 - 2¹³ = 243794497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243802689.

It is not an unprimeable number, because it can be changed into a prime (243802609) 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, 3125637 + ... + 3125714.

It is an arithmetic number, because the mean of its divisors is an integer number (43759464).

Almost surely, 2^243802689 is an apocalyptic number.

It is an amenable number.

243802689 is a deficient number, since it is larger than the sum of its proper divisors (106273023).

243802689 is a wasteful number, since it uses less digits than its factorization.

243802689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6251367.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 243802689 is about 15614.1823032780. The cubic root of 243802689 is about 624.7114947907.

The spelling of 243802689 in words is "two hundred forty-three million, eight hundred two thousand, six hundred eighty-nine".