47209239 has 48 divisors (see below), whose sum is σ = 85872384. Its totient is φ = 24480720.

The previous prime is 47209237. The next prime is 47209247. The reversal of 47209239 is 93290274.

47209239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47209239 - 2¹ = 47209237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47209237) 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 in 47 ways as a sum of consecutive naturals, for example, 83572 + ... + 84134.

It is an arithmetic number, because the mean of its divisors is an integer number (1789008).

Almost surely, 2^47209239 is an apocalyptic number.

47209239 is a deficient number, since it is larger than the sum of its proper divisors (38663145).

47209239 is a wasteful number, since it uses less digits than its factorization.

47209239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 47209239 is about 6870.8979762474. The cubic root of 47209239 is about 361.4173522487.

The spelling of 47209239 in words is "forty-seven million, two hundred nine thousand, two hundred thirty-nine".