47729 has 4 divisors (see below), whose sum is σ = 52080. Its totient is φ = 43380.

The previous prime is 47717. The next prime is 47737. The reversal of 47729 is 92774.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47729 - 2⁴ = 47713 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 47729.

It is not an unprimeable number, because it can be changed into a prime (47779) 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, 2159 + ... + 2180.

It is an arithmetic number, because the mean of its divisors is an integer number (13020).

2⁴⁷⁷²⁹ is an apocalyptic number.

It is an amenable number.

47729 is a deficient number, since it is larger than the sum of its proper divisors (4351).

47729 is a wasteful number, since it uses less digits than its factorization.

47729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350.

The product of its digits is 3528, while the sum is 29.

The square root of 47729 is about 218.4696775299. The cubic root of 47729 is about 36.2738883368.

The spelling of 47729 in words is "forty-seven thousand, seven hundred twenty-nine".