868284421 has 4 divisors (see below), whose sum is σ = 869441344. Its totient is φ = 867127500.

The previous prime is 868284383. The next prime is 868284433. The reversal of 868284421 is 124482868.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 868284421 - 2¹⁵ = 868251653 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 (868284481) 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 3 ways as a sum of consecutive naturals, for example, 577335 + ... + 578836.

It is an arithmetic number, because the mean of its divisors is an integer number (217360336).

Almost surely, 2^868284421 is an apocalyptic number.

It is an amenable number.

868284421 is a deficient number, since it is larger than the sum of its proper divisors (1156923).

868284421 is a wasteful number, since it uses less digits than its factorization.

868284421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156922.

The product of its digits is 196608, while the sum is 43.

The square root of 868284421 is about 29466.6662688537. Note that the first 3 decimals coincide. The cubic root of 868284421 is about 954.0123634652.

The spelling of 868284421 in words is "eight hundred sixty-eight million, two hundred eighty-four thousand, four hundred twenty-one".