447252121 has 8 divisors (see below), whose sum is σ = 449827560. Its totient is φ = 444682752.

The previous prime is 447252119. The next prime is 447252137. The reversal of 447252121 is 121252744.

It can be written as a sum of positive squares in 4 ways, for example, as 125552025 + 321700096 = 11205^2 + 17936^2 .

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 447252121 - 2¹ = 447252119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 447252121.

It is not an unprimeable number, because it can be changed into a prime (447252151) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 277165 + ... + 278773.

It is an arithmetic number, because the mean of its divisors is an integer number (56228445).

Almost surely, 2^447252121 is an apocalyptic number.

It is an amenable number.

447252121 is a deficient number, since it is larger than the sum of its proper divisors (2575439).

447252121 is a wasteful number, since it uses less digits than its factorization.

447252121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3035.

The product of its digits is 4480, while the sum is 28.

The square root of 447252121 is about 21148.3361284050. The cubic root of 447252121 is about 764.7464499273.

The spelling of 447252121 in words is "four hundred forty-seven million, two hundred fifty-two thousand, one hundred twenty-one".