243798887 has 8 divisors (see below), whose sum is σ = 263011536. Its totient is φ = 225127552.

The previous prime is 243798871. The next prime is 243798913. The reversal of 243798887 is 788897342.

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 243798887 - 2⁴ = 243798871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243791887) 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, 134393 + ... + 136194.

It is an arithmetic number, because the mean of its divisors is an integer number (32876442).

Almost surely, 2^243798887 is an apocalyptic number.

243798887 is a deficient number, since it is larger than the sum of its proper divisors (19212649).

243798887 is a wasteful number, since it uses less digits than its factorization.

243798887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270657.

The product of its digits is 5419008, while the sum is 56.

The square root of 243798887 is about 15614.0605545130. The cubic root of 243798887 is about 624.7082474032.

The spelling of 243798887 in words is "two hundred forty-three million, seven hundred ninety-eight thousand, eight hundred eighty-seven".