321444422 has 12 divisors (see below), whose sum is σ = 522109980. Its totient is φ = 148358808.

The previous prime is 321444401. The next prime is 321444437. The reversal of 321444422 is 224444123.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 321444391 and 321444400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 475172 + ... + 475847.

It is an arithmetic number, because the mean of its divisors is an integer number (43509165).

Almost surely, 2^321444422 is an apocalyptic number.

321444422 is a deficient number, since it is larger than the sum of its proper divisors (200665558).

321444422 is a wasteful number, since it uses less digits than its factorization.

321444422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951047 (or 951034 counting only the distinct ones).

The product of its digits is 6144, while the sum is 26.

The square root of 321444422 is about 17928.8711858834. The cubic root of 321444422 is about 685.0179702960.

Adding to 321444422 its reverse (224444123), we get a palindrome (545888545).

The spelling of 321444422 in words is "three hundred twenty-one million, four hundred forty-four thousand, four hundred twenty-two".