447121645 has 8 divisors (see below), whose sum is σ = 538094304. Its totient is φ = 356665104.

The previous prime is 447121639. The next prime is 447121691. The reversal of 447121645 is 546121744.

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 447121645 - 2³ = 447121637 is a prime.

It is a super-3 number, since 3×447121645³ (a number of 27 digits) contains 333 as substring.

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 447121645.

It is a congruent number.

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, 127119 + ... + 130588.

It is an arithmetic number, because the mean of its divisors is an integer number (67261788).

Almost surely, 2^447121645 is an apocalyptic number.

It is an amenable number.

447121645 is a deficient number, since it is larger than the sum of its proper divisors (90972659).

447121645 is a wasteful number, since it uses less digits than its factorization.

447121645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258059.

The product of its digits is 26880, while the sum is 34.

The square root of 447121645 is about 21145.2511217058. The cubic root of 447121645 is about 764.6720766915.

Subtracting 447121645 from its reverse (546121744), we obtain a palindrome (99000099).

The spelling of 447121645 in words is "four hundred forty-seven million, one hundred twenty-one thousand, six hundred forty-five".