473744887909 has 4 divisors (see below), whose sum is σ = 473762697100. Its totient is φ = 473727078720.

The previous prime is 473744887897. The next prime is 473744887963. The reversal of 473744887909 is 909788447374.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 238207444225 + 235537443684 = 488065^2 + 485322^2 .

It is a cyclic number.

It is not a de Polignac number, because 473744887909 - 2²¹ = 473742790757 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 (473744887969) 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 3 ways as a sum of consecutive naturals, for example, 8864634 + ... + 8917915.

It is an arithmetic number, because the mean of its divisors is an integer number (118440674275).

Almost surely, 2^473744887909 is an apocalyptic number.

It is an amenable number.

473744887909 is a deficient number, since it is larger than the sum of its proper divisors (17809191).

473744887909 is a wasteful number, since it uses less digits than its factorization.

473744887909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17809190.

The product of its (nonzero) digits is 341397504, while the sum is 70.

The spelling of 473744887909 in words is "four hundred seventy-three billion, seven hundred forty-four million, eight hundred eighty-seven thousand, nine hundred nine".