447071321 has 8 divisors (see below), whose sum is σ = 474152904. Its totient is φ = 420076800.

The previous prime is 447071299. The next prime is 447071329. The reversal of 447071321 is 123170744.

It can be written as a sum of positive squares in 4 ways, for example, as 45630025 + 401441296 = 6755^2 + 20036^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-447071321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447071329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11030 + ... + 31871.

It is an arithmetic number, because the mean of its divisors is an integer number (59269113).

Almost surely, 2^447071321 is an apocalyptic number.

It is an amenable number.

447071321 is a deficient number, since it is larger than the sum of its proper divisors (27081583).

447071321 is a wasteful number, since it uses less digits than its factorization.

447071321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43531.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 447071321 is about 21144.0611283642. The cubic root of 447071321 is about 764.6433874062.

The spelling of 447071321 in words is "four hundred forty-seven million, seventy-one thousand, three hundred twenty-one".