475221946 has 4 divisors (see below), whose sum is σ = 712832922. Its totient is φ = 237610972.

The previous prime is 475221937. The next prime is 475221949. The reversal of 475221946 is 649122574.

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., 352876225 + 122345721 = 18785^2 + 11061^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 475221899 and 475221908.

It is not an unprimeable number, because it can be changed into a prime (475221949) 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 as a sum of consecutive naturals, namely, 118805485 + ... + 118805488.

Almost surely, 2^475221946 is an apocalyptic number.

475221946 is a deficient number, since it is larger than the sum of its proper divisors (237610976).

475221946 is a wasteful number, since it uses less digits than its factorization.

475221946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237610975.

The product of its digits is 120960, while the sum is 40.

The square root of 475221946 is about 21799.5859134984. The cubic root of 475221946 is about 780.3668808804.

The spelling of 475221946 in words is "four hundred seventy-five million, two hundred twenty-one thousand, nine hundred forty-six".