473864821 has 2 divisors, whose sum is σ = 473864822. Its totient is φ = 473864820.

The previous prime is 473864789. The next prime is 473864861. The reversal of 473864821 is 128468374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 392594596 + 81270225 = 19814^2 + 9015^2 .

It is a cyclic number.

It is not a de Polignac number, because 473864821 - 2⁵ = 473864789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (473864861) 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, 236932410 + 236932411.

It is an arithmetic number, because the mean of its divisors is an integer number (236932411).

Almost surely, 2^473864821 is an apocalyptic number.

It is an amenable number.

473864821 is a deficient number, since it is larger than the sum of its proper divisors (1).

473864821 is an equidigital number, since it uses as much as digits as its factorization.

473864821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 43.

The square root of 473864821 is about 21768.4363471518. The cubic root of 473864821 is about 779.6233229461.

The spelling of 473864821 in words is "four hundred seventy-three million, eight hundred sixty-four thousand, eight hundred twenty-one".