8439222 has 16 divisors (see below), whose sum is σ = 18412992. Its totient is φ = 2557320.

The previous prime is 8439217. The next prime is 8439241. The reversal of 8439222 is 2229348.

It is a d-powerful number, because it can be written as 8⁵ + 4 + 3⁶ + 9³ + 2¹⁴ + 2²² + 2²² .

It is a self number, because there is not a number n which added to its sum of digits gives 8439222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63868 + ... + 63999.

It is an arithmetic number, because the mean of its divisors is an integer number (1150812).

Almost surely, 2^8439222 is an apocalyptic number.

8439222 is an abundant number, since it is smaller than the sum of its proper divisors (9973770).

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

8439222 is a wasteful number, since it uses less digits than its factorization.

8439222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127883.

The product of its digits is 6912, while the sum is 30.

The square root of 8439222 is about 2905.0339068589. The cubic root of 8439222 is about 203.5951698644.

The spelling of 8439222 in words is "eight million, four hundred thirty-nine thousand, two hundred twenty-two".