284740458921 has 8 divisors (see below), whose sum is σ = 421837716960. Its totient is φ = 189826972596.

The previous prime is 284740458901. The next prime is 284740458943. The reversal of 284740458921 is 129854047482.

284740458921 is a `hidden beast` number, since 28 + 47 + 40 + 458 + 92 + 1 = 666.

It is not a de Polignac number, because 284740458921 - 2¹⁵ = 284740426153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (284740458901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5272971435 + ... + 5272971488.

It is an arithmetic number, because the mean of its divisors is an integer number (52729714620).

Almost surely, 2^284740458921 is an apocalyptic number.

It is an amenable number.

284740458921 is a deficient number, since it is larger than the sum of its proper divisors (137097258039).

284740458921 is a wasteful number, since it uses less digits than its factorization.

284740458921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10545942932 (or 10545942926 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 284740458921 in words is "two hundred eighty-four billion, seven hundred forty million, four hundred fifty-eight thousand, nine hundred twenty-one".