47272209 has 16 divisors (see below), whose sum is σ = 66662400. Its totient is φ = 29714256.

The previous prime is 47272207. The next prime is 47272217. The reversal of 47272209 is 90227274.

It is not a de Polignac number, because 47272209 - 2¹ = 47272207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47272209.

It is not an unprimeable number, because it can be changed into a prime (47272201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10852 + ... + 14570.

It is an arithmetic number, because the mean of its divisors is an integer number (4166400).

Almost surely, 2^47272209 is an apocalyptic number.

It is an amenable number.

47272209 is a deficient number, since it is larger than the sum of its proper divisors (19390191).

47272209 is a wasteful number, since it uses less digits than its factorization.

47272209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 47272209 is about 6875.4788196896. The cubic root of 47272209 is about 361.5779729229.

The spelling of 47272209 in words is "forty-seven million, two hundred seventy-two thousand, two hundred nine".