447121879 has 8 divisors (see below), whose sum is σ = 473726448. Its totient is φ = 420551040.

The previous prime is 447121859. The next prime is 447121919. The reversal of 447121879 is 978121744.

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 447121879 - 2¹⁷ = 446990807 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 (447121859) 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, 22044 + ... + 37150.

It is an arithmetic number, because the mean of its divisors is an integer number (59215806).

Almost surely, 2^447121879 is an apocalyptic number.

447121879 is a deficient number, since it is larger than the sum of its proper divisors (26604569).

447121879 is a wasteful number, since it uses less digits than its factorization.

447121879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16865.

The product of its digits is 112896, while the sum is 43.

The square root of 447121879 is about 21145.2566548623. The cubic root of 447121879 is about 764.6722100879.

The spelling of 447121879 in words is "four hundred forty-seven million, one hundred twenty-one thousand, eight hundred seventy-nine".