438211422 has 72 divisors (see below), whose sum is σ = 1050554232. Its totient is φ = 131910240.

The previous prime is 438211391. The next prime is 438211439. The reversal of 438211422 is 224112834.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 376213 + ... + 377375.

It is an arithmetic number, because the mean of its divisors is an integer number (14591031).

Almost surely, 2^438211422 is an apocalyptic number.

It is a pronic number, being equal to 20933×20934.

It is a practical number, because each smaller number is the sum of distinct divisors of 438211422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (525277116).

438211422 is an abundant number, since it is smaller than the sum of its proper divisors (612342810).

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

438211422 is a wasteful number, since it uses less digits than its factorization.

438211422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366 (or 1352 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 438211422 is about 20933.4999940287. The cubic root of 438211422 is about 759.5585051210.

The spelling of 438211422 in words is "four hundred thirty-eight million, two hundred eleven thousand, four hundred twenty-two".