47109 has 8 divisors (see below), whose sum is σ = 64512. Its totient is φ = 30560.

The previous prime is 47093. The next prime is 47111. The reversal of 47109 is 90174.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47109 - 2⁴ = 47093 is a prime.

It is a Curzon number.

47109 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69 + ... + 314.

It is an arithmetic number, because the mean of its divisors is an integer number (8064).

2⁴⁷¹⁰⁹ is an apocalyptic number.

It is an amenable number.

47109 is a deficient number, since it is larger than the sum of its proper divisors (17403).

47109 is a wasteful number, since it uses less digits than its factorization.

47109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 47109 is about 217.0460780572. The cubic root of 47109 is about 36.1161372798.

The spelling of 47109 in words is "forty-seven thousand, one hundred nine".