473305921 has 4 divisors (see below), whose sum is σ = 516333744. Its totient is φ = 430278100.

The previous prime is 473305913. The next prime is 473305949. The reversal of 473305921 is 129503374.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 473305921 - 2³ = 473305913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (473300921) 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, 21513895 + ... + 21513916.

It is an arithmetic number, because the mean of its divisors is an integer number (129083436).

Almost surely, 2^473305921 is an apocalyptic number.

It is an amenable number.

473305921 is a deficient number, since it is larger than the sum of its proper divisors (43027823).

473305921 is a wasteful number, since it uses less digits than its factorization.

473305921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43027822.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 473305921 is about 21755.5951653822. The cubic root of 473305921 is about 779.3166933785.

The spelling of 473305921 in words is "four hundred seventy-three million, three hundred five thousand, nine hundred twenty-one".