447621285 has 48 divisors (see below), whose sum is σ = 788356800. Its totient is φ = 216260352.

The previous prime is 447621281. The next prime is 447621299. The reversal of 447621285 is 582126744.

It is not a de Polignac number, because 447621285 - 2² = 447621281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447621281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 149281 + ... + 152249.

It is an arithmetic number, because the mean of its divisors is an integer number (16424100).

Almost surely, 2^447621285 is an apocalyptic number.

It is an amenable number.

447621285 is a deficient number, since it is larger than the sum of its proper divisors (340735515).

447621285 is a wasteful number, since it uses less digits than its factorization.

447621285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042 (or 3019 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 447621285 is about 21157.0622960750. The cubic root of 447621285 is about 764.9568004996.

The spelling of 447621285 in words is "four hundred forty-seven million, six hundred twenty-one thousand, two hundred eighty-five".