47479 has 4 divisors (see below), whose sum is σ = 48160. Its totient is φ = 46800.

The previous prime is 47459. The next prime is 47491. The reversal of 47479 is 97474.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47479 - 2⁷ = 47351 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 47479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222 + ... + 379.

It is an arithmetic number, because the mean of its divisors is an integer number (12040).

2⁴⁷⁴⁷⁹ is an apocalyptic number.

47479 is a deficient number, since it is larger than the sum of its proper divisors (681).

47479 is an equidigital number, since it uses as much as digits as its factorization.

47479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680.

The product of its digits is 7056, while the sum is 31.

The square root of 47479 is about 217.8967645469. The cubic root of 47479 is about 36.2104443679.

The spelling of 47479 in words is "forty-seven thousand, four hundred seventy-nine".