47412209 has 4 divisors (see below), whose sum is σ = 51059316. Its totient is φ = 43765104.

The previous prime is 47412203. The next prime is 47412217. The reversal of 47412209 is 90221474.

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 15523600 + 31888609 = 3940^2 + 5647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47412209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47412203) 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, 1823534 + ... + 1823559.

It is an arithmetic number, because the mean of its divisors is an integer number (12764829).

Almost surely, 2^47412209 is an apocalyptic number.

It is an amenable number.

47412209 is a deficient number, since it is larger than the sum of its proper divisors (3647107).

47412209 is a wasteful number, since it uses less digits than its factorization.

47412209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3647106.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 47412209 is about 6885.6524019152. The cubic root of 47412209 is about 361.9345673989.

The spelling of 47412209 in words is "forty-seven million, four hundred twelve thousand, two hundred nine".