445079221 has 8 divisors (see below), whose sum is σ = 448056000. Its totient is φ = 442110240.

The previous prime is 445079177. The next prime is 445079267. The reversal of 445079221 is 122970544.

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

It is a cyclic number.

It is not a de Polignac number, because 445079221 - 2¹¹ = 445077173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445079281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149970 + ... + 152908.

It is an arithmetic number, because the mean of its divisors is an integer number (56007000).

Almost surely, 2^445079221 is an apocalyptic number.

It is an amenable number.

445079221 is a deficient number, since it is larger than the sum of its proper divisors (2976779).

445079221 is a wasteful number, since it uses less digits than its factorization.

445079221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3899.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 445079221 is about 21096.9007439481. The cubic root of 445079221 is about 763.5059744183.

The spelling of 445079221 in words is "four hundred forty-five million, seventy-nine thousand, two hundred twenty-one".