447149471 has 4 divisors (see below), whose sum is σ = 451490832. Its totient is φ = 442808112.

The previous prime is 447149431. The next prime is 447149473. The reversal of 447149471 is 174941744.

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

It is a cyclic number.

It is not a de Polignac number, because 447149471 - 2¹⁰ = 447148447 is a prime.

It is a super-3 number, since 3×447149471³ (a number of 27 digits) contains 333 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 (447149473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2170526 + ... + 2170731.

It is an arithmetic number, because the mean of its divisors is an integer number (112872708).

Almost surely, 2^447149471 is an apocalyptic number.

447149471 is a deficient number, since it is larger than the sum of its proper divisors (4341361).

447149471 is a wasteful number, since it uses less digits than its factorization.

447149471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4341360.

The product of its digits is 112896, while the sum is 41.

The square root of 447149471 is about 21145.9090842650. The cubic root of 447149471 is about 764.6879391338.

The spelling of 447149471 in words is "four hundred forty-seven million, one hundred forty-nine thousand, four hundred seventy-one".