473644021 has 8 divisors (see below), whose sum is σ = 502093080. Its totient is φ = 445260288.

The previous prime is 473644001. The next prime is 473644033. The reversal of 473644021 is 120446374.

It can be written as a sum of positive squares in 4 ways, for example, as 153412996 + 320231025 = 12386^2 + 17895^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 473644021 - 2⁹ = 473643509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (473644001) 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 7 ways as a sum of consecutive naturals, for example, 976 + ... + 30793.

It is an arithmetic number, because the mean of its divisors is an integer number (62761635).

Almost surely, 2^473644021 is an apocalyptic number.

It is an amenable number.

473644021 is a deficient number, since it is larger than the sum of its proper divisors (28449059).

473644021 is a wasteful number, since it uses less digits than its factorization.

473644021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32663.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 473644021 is about 21763.3641930654. The cubic root of 473644021 is about 779.5022141645.

The spelling of 473644021 in words is "four hundred seventy-three million, six hundred forty-four thousand, twenty-one".