442009322 has 16 divisors (see below), whose sum is σ = 668362752. Its totient is φ = 219226800.

The previous prime is 442009319. The next prime is 442009339. The reversal of 442009322 is 223900244.

It is a junction number, because it is equal to n+sod(n) for n = 442009291 and 442009300.

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, 360803 + ... + 362025.

It is an arithmetic number, because the mean of its divisors is an integer number (41772672).

Almost surely, 2^442009322 is an apocalyptic number.

442009322 is a deficient number, since it is larger than the sum of its proper divisors (226353430).

442009322 is a wasteful number, since it uses less digits than its factorization.

442009322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 442009322 is about 21024.0177416211. The cubic root of 442009322 is about 761.7465154384.

Adding to 442009322 its reverse (223900244), we get a palindrome (665909566).

The spelling of 442009322 in words is "four hundred forty-two million, nine thousand, three hundred twenty-two".