47471201209 has 4 divisors (see below), whose sum is σ = 47526854116. Its totient is φ = 47415548304.

The previous prime is 47471201177. The next prime is 47471201227. The reversal of 47471201209 is 90210217474.

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 4105221184 + 43365980025 = 64072^2 + 208245^2 .

It is a cyclic number.

It is not a de Polignac number, because 47471201209 - 2⁵ = 47471201177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47471201249) 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, 27825174 + ... + 27826879.

It is an arithmetic number, because the mean of its divisors is an integer number (11881713529).

Almost surely, 2^47471201209 is an apocalyptic number.

It is an amenable number.

47471201209 is a deficient number, since it is larger than the sum of its proper divisors (55652907).

47471201209 is an equidigital number, since it uses as much as digits as its factorization.

47471201209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55652906.

The product of its (nonzero) digits is 28224, while the sum is 37.

The spelling of 47471201209 in words is "forty-seven billion, four hundred seventy-one million, two hundred one thousand, two hundred nine".