85284488440 has 32 divisors (see below), whose sum is σ = 191931102000. Its totient is φ = 34106505984.

The previous prime is 85284488407. The next prime is 85284488447. The reversal of 85284488440 is 4488448258.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85284488447) 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, 36270 + ... + 414589.

Almost surely, 2^85284488440 is an apocalyptic number.

It is an amenable number.

85284488440 is an abundant number, since it is smaller than the sum of its proper divisors (106646613560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85284488440 is a wasteful number, since it uses less digits than its factorization.

85284488440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455599 (or 455595 counting only the distinct ones).

The product of its (nonzero) digits is 10485760, while the sum is 55.

The spelling of 85284488440 in words is "eighty-five billion, two hundred eighty-four million, four hundred eighty-eight thousand, four hundred forty".