868890243 has 16 divisors (see below), whose sum is σ = 1249619616. Its totient is φ = 533852160.

The previous prime is 868890241. The next prime is 868890263. The reversal of 868890243 is 342098868.

It is a happy number.

868890243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 868890243 - 2¹ = 868890241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 868890192 and 868890201.

It is not an unprimeable number, because it can be changed into a prime (868890241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7621 + ... + 42377.

It is an arithmetic number, because the mean of its divisors is an integer number (78101226).

Almost surely, 2^868890243 is an apocalyptic number.

868890243 is a deficient number, since it is larger than the sum of its proper divisors (380729373).

868890243 is a wasteful number, since it uses less digits than its factorization.

868890243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35414.

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 868890243 is about 29476.9442615750. The cubic root of 868890243 is about 954.2341906673.

The spelling of 868890243 in words is "eight hundred sixty-eight million, eight hundred ninety thousand, two hundred forty-three".