47405 has 8 divisors (see below), whose sum is σ = 60000. Its totient is φ = 35856.

The previous prime is 47389. The next prime is 47407. The reversal of 47405 is 50474.

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 47405 - 2⁴ = 47389 is a prime.

It is a Curzon number.

It is a plaindrome in base 8.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 47405.

It is not an unprimeable number, because it can be changed into a prime (47407) 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, 155 + ... + 344.

It is an arithmetic number, because the mean of its divisors is an integer number (7500).

2⁴⁷⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

47405 is a deficient number, since it is larger than the sum of its proper divisors (12595).

47405 is a wasteful number, since it uses less digits than its factorization.

47405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 47405 is about 217.7268931483. The cubic root of 47405 is about 36.1916222486.

Adding to 47405 its reverse (50474), we get a palindrome (97879).

The spelling of 47405 in words is "forty-seven thousand, four hundred five".