447933915 has 64 divisors (see below), whose sum is σ = 935585280. Its totient is φ = 200465280.

The previous prime is 447933907. The next prime is 447933917. The reversal of 447933915 is 519339744.

It is not a de Polignac number, because 447933915 - 2³ = 447933907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (447933917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7704 + ... + 30906.

It is an arithmetic number, because the mean of its divisors is an integer number (14618520).

Almost surely, 2^447933915 is an apocalyptic number.

447933915 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

447933915 is an abundant number, since it is smaller than the sum of its proper divisors (487651365).

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

447933915 is a wasteful number, since it uses less digits than its factorization.

447933915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23241 (or 23235 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 447933915 is about 21164.4493195547. The cubic root of 447933915 is about 765.1348474323.

The spelling of 447933915 in words is "four hundred forty-seven million, nine hundred thirty-three thousand, nine hundred fifteen".