422489187584 has 72 divisors (see below), whose sum is σ = 900838690920. Its totient is φ = 197058756608.

The previous prime is 422489187583. The next prime is 422489187587. The reversal of 422489187584 is 485781984224.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 98646246400 + 323842941184 = 314080^2 + 569072^2 .

It is a super-2 number, since 2×422489187584² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422489187583) 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, 62222 + ... + 921330.

It is an arithmetic number, because the mean of its divisors is an integer number (12511648485).

Almost surely, 2^422489187584 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422489187584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450419345460).

422489187584 is an abundant number, since it is smaller than the sum of its proper divisors (478349503336).

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

422489187584 is a wasteful number, since it uses less digits than its factorization.

422489187584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859255 (or 859241 counting only the distinct ones).

The product of its digits is 41287680, while the sum is 62.

The spelling of 422489187584 in words is "four hundred twenty-two billion, four hundred eighty-nine million, one hundred eighty-seven thousand, five hundred eighty-four".