447480987 has 8 divisors (see below), whose sum is σ = 631737936. Its totient is φ = 280772352.

The previous prime is 447480973. The next prime is 447481003. The reversal of 447480987 is 789084744.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 447480987 - 2¹¹ = 447478939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 8774137 = 447480987 / (4 + 4 + 7 + 4 + 8 + 0 + 9 + 8 + 7).

It is not an unprimeable number, because it can be changed into a prime (447480907) 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, 4387018 + ... + 4387119.

It is an arithmetic number, because the mean of its divisors is an integer number (78967242).

Almost surely, 2^447480987 is an apocalyptic number.

447480987 is a deficient number, since it is larger than the sum of its proper divisors (184256949).

447480987 is a wasteful number, since it uses less digits than its factorization.

447480987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8774157.

The product of its (nonzero) digits is 1806336, while the sum is 51.

The square root of 447480987 is about 21153.7464057788. The cubic root of 447480987 is about 764.8768719772.

The spelling of 447480987 in words is "four hundred forty-seven million, four hundred eighty thousand, nine hundred eighty-seven".