447878026 has 4 divisors (see below), whose sum is σ = 671817042. Its totient is φ = 223939012.

The previous prime is 447878023. The next prime is 447878077. The reversal of 447878026 is 620878744.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 438274225 + 9603801 = 20935^2 + 3099^2 .

It is not an unprimeable number, because it can be changed into a prime (447878021) 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 as a sum of consecutive naturals, namely, 111969505 + ... + 111969508.

Almost surely, 2^447878026 is an apocalyptic number.

447878026 is a deficient number, since it is larger than the sum of its proper divisors (223939016).

447878026 is a wasteful number, since it uses less digits than its factorization.

447878026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223939015.

The product of its (nonzero) digits is 602112, while the sum is 46.

The square root of 447878026 is about 21163.1289274530. The cubic root of 447878026 is about 765.1030239879.

The spelling of 447878026 in words is "four hundred forty-seven million, eight hundred seventy-eight thousand, twenty-six".