447215946 has 32 divisors (see below), whose sum is σ = 919695168. Its totient is φ = 144888960.

The previous prime is 447215921. The next prime is 447215947. The reversal of 447215946 is 649512744.

It is a junction number, because it is equal to n+sod(n) for n = 447215898 and 447215907.

It is not an unprimeable number, because it can be changed into a prime (447215947) 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 15 ways as a sum of consecutive naturals, for example, 64861 + ... + 71423.

It is an arithmetic number, because the mean of its divisors is an integer number (28740474).

Almost surely, 2^447215946 is an apocalyptic number.

447215946 is an abundant number, since it is smaller than the sum of its proper divisors (472479222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

447215946 is a wasteful number, since it uses less digits than its factorization.

447215946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6886.

The product of its digits is 241920, while the sum is 42.

The square root of 447215946 is about 21147.4808428806. The cubic root of 447215946 is about 764.7258310956.

The spelling of 447215946 in words is "four hundred forty-seven million, two hundred fifteen thousand, nine hundred forty-six".