447221121 has 16 divisors (see below), whose sum is σ = 619315200. Its totient is φ = 286852688.

The previous prime is 447221087. The next prime is 447221129. The reversal of 447221121 is 121122744.

It is a cyclic number.

It is not a de Polignac number, because 447221121 - 2¹³ = 447212929 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 447221091 and 447221100.

It is not an unprimeable number, because it can be changed into a prime (447221129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18561 + ... + 35198.

It is an arithmetic number, because the mean of its divisors is an integer number (38707200).

Almost surely, 2^447221121 is an apocalyptic number.

It is an amenable number.

447221121 is a deficient number, since it is larger than the sum of its proper divisors (172094079).

447221121 is a wasteful number, since it uses less digits than its factorization.

447221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53868.

The product of its digits is 896, while the sum is 24.

The square root of 447221121 is about 21147.6031975257. The cubic root of 447221121 is about 764.7287807824.

Adding to 447221121 its reverse (121122744), we get a palindrome (568343865).

The spelling of 447221121 in words is "four hundred forty-seven million, two hundred twenty-one thousand, one hundred twenty-one".