422404444434 has 128 divisors (see below), whose sum is σ = 1004895590400. Its totient is φ = 118279342272.

The previous prime is 422404444349. The next prime is 422404444481. The reversal of 422404444434 is 434444404224.

It is a junction number, because it is equal to n+sod(n) for n = 422404444392 and 422404444401.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 142558237 + ... + 142561199.

It is an arithmetic number, because the mean of its divisors is an integer number (7850746800).

Almost surely, 2^422404444434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422404444434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502447795200).

422404444434 is an abundant number, since it is smaller than the sum of its proper divisors (582491145966).

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

422404444434 is a wasteful number, since it uses less digits than its factorization.

422404444434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349 (or 4335 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 39.

Adding to 422404444434 its reverse (434444404224), we get a palindrome (856848848658).

The spelling of 422404444434 in words is "four hundred twenty-two billion, four hundred four million, four hundred forty-four thousand, four hundred thirty-four".