447145378 has 8 divisors (see below), whose sum is σ = 670889772. Its totient is φ = 223515456.

The previous prime is 447145343. The next prime is 447145379. The reversal of 447145378 is 873541744.

It can be written as a sum of positive squares in 2 ways, for example, as 340291809 + 106853569 = 18447^2 + 10337^2 .

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

It is not an unprimeable number, because it can be changed into a prime (447145379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18075 + ... + 34942.

Almost surely, 2^447145378 is an apocalyptic number.

447145378 is a deficient number, since it is larger than the sum of its proper divisors (223744394).

447145378 is a wasteful number, since it uses less digits than its factorization.

447145378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57236.

The product of its digits is 376320, while the sum is 43.

The square root of 447145378 is about 21145.8123040946. The cubic root of 447145378 is about 764.6856059265.

The spelling of 447145378 in words is "four hundred forty-seven million, one hundred forty-five thousand, three hundred seventy-eight".