447489531 has 6 divisors (see below), whose sum is σ = 646373780. Its totient is φ = 298326348.

The previous prime is 447489467. The next prime is 447489569. The reversal of 447489531 is 135984744.

447489531 is a `hidden beast` number, since 44 + 74 + 8 + 9 + 531 = 666.

It is not a de Polignac number, because 447489531 - 2⁶ = 447489467 is a prime.

It is a super-2 number, since 2×447489531² = 400493760709199922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447489131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24860521 + ... + 24860538.

Almost surely, 2^447489531 is an apocalyptic number.

447489531 is a deficient number, since it is larger than the sum of its proper divisors (198884249).

447489531 is a wasteful number, since it uses less digits than its factorization.

447489531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49721065 (or 49721062 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 447489531 is about 21153.9483548580. The cubic root of 447489531 is about 764.8817400174.

The spelling of 447489531 in words is "four hundred forty-seven million, four hundred eighty-nine thousand, five hundred thirty-one".