284385989881 has 8 divisors (see below), whose sum is σ = 325301983424. Its totient is φ = 243542352240.

The previous prime is 284385989861. The next prime is 284385989887. The reversal of 284385989881 is 188989583482.

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 284385989881 - 2⁷ = 284385989753 is a prime.

It is a super-2 number, since 2×284385989881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284385989887) 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, 18080550 + ... + 18096271.

It is an arithmetic number, because the mean of its divisors is an integer number (40662747928).

Almost surely, 2^284385989881 is an apocalyptic number.

It is an amenable number.

284385989881 is a deficient number, since it is larger than the sum of its proper divisors (40915993543).

284385989881 is a wasteful number, since it uses less digits than its factorization.

284385989881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36177951.

The product of its digits is 318504960, while the sum is 73.

The spelling of 284385989881 in words is "two hundred eighty-four billion, three hundred eighty-five million, nine hundred eighty-nine thousand, eight hundred eighty-one".