447131969 has 8 divisors (see below), whose sum is σ = 451585128. Its totient is φ = 442696320.

The previous prime is 447131963. The next prime is 447131981. The reversal of 447131969 is 969131744.

It can be written as a sum of positive squares in 4 ways, for example, as 227647744 + 219484225 = 15088^2 + 14815^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-447131969 is a prime.

It is a super-2 number, since 2×447131969² = 399853995403633922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (447131963) 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, 50279 + ... + 58499.

It is an arithmetic number, because the mean of its divisors is an integer number (56448141).

Almost surely, 2^447131969 is an apocalyptic number.

It is an amenable number.

447131969 is a deficient number, since it is larger than the sum of its proper divisors (4453159).

447131969 is a wasteful number, since it uses less digits than its factorization.

447131969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8755.

The product of its digits is 163296, while the sum is 44.

The square root of 447131969 is about 21145.4952413038. The cubic root of 447131969 is about 764.6779620502.

The spelling of 447131969 in words is "four hundred forty-seven million, one hundred thirty-one thousand, nine hundred sixty-nine".