473385989 has 2 divisors, whose sum is σ = 473385990. Its totient is φ = 473385988.

The previous prime is 473385971. The next prime is 473386037. The reversal of 473385989 is 989583374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 448804225 + 24581764 = 21185^2 + 4958^2 .

It is a cyclic number.

It is not a de Polignac number, because 473385989 - 2¹² = 473381893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (473385949) 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, 236692994 + 236692995.

It is an arithmetic number, because the mean of its divisors is an integer number (236692995).

Almost surely, 2^473385989 is an apocalyptic number.

It is an amenable number.

473385989 is a deficient number, since it is larger than the sum of its proper divisors (1).

473385989 is an equidigital number, since it uses as much as digits as its factorization.

473385989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 56.

The square root of 473385989 is about 21757.4352578607. The cubic root of 473385989 is about 779.3606359309.

The spelling of 473385989 in words is "four hundred seventy-three million, three hundred eighty-five thousand, nine hundred eighty-nine".