447730671 has 4 divisors (see below), whose sum is σ = 596974232. Its totient is φ = 298487112.

The previous prime is 447730643. The next prime is 447730691. The reversal of 447730671 is 176037744.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 447730671 - 2⁵ = 447730639 is a prime.

It is a super-2 number, since 2×447730671² = 400925507508220482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447730691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74621776 + ... + 74621781.

It is an arithmetic number, because the mean of its divisors is an integer number (149243558).

Almost surely, 2^447730671 is an apocalyptic number.

447730671 is a deficient number, since it is larger than the sum of its proper divisors (149243561).

447730671 is a wasteful number, since it uses less digits than its factorization.

447730671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149243560.

The product of its (nonzero) digits is 98784, while the sum is 39.

The square root of 447730671 is about 21159.6472324091. The cubic root of 447730671 is about 765.0191067038.

The spelling of 447730671 in words is "four hundred forty-seven million, seven hundred thirty thousand, six hundred seventy-one".