422169816 has 64 divisors (see below), whose sum is σ = 1113350400. Its totient is φ = 133031808.

The previous prime is 422169779. The next prime is 422169817. The reversal of 422169816 is 618961224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422169817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344581 + ... + 345803.

It is an arithmetic number, because the mean of its divisors is an integer number (17396100).

Almost surely, 2^422169816 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 422169816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556675200).

422169816 is an abundant number, since it is smaller than the sum of its proper divisors (691180584).

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

422169816 is a wasteful number, since it uses less digits than its factorization.

422169816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008 (or 2004 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 422169816 is about 20546.7714252142. The cubic root of 422169816 is about 750.1746650974.

The spelling of 422169816 in words is "four hundred twenty-two million, one hundred sixty-nine thousand, eight hundred sixteen".