19479 has 8 divisors (see below), whose sum is σ = 26752. Its totient is φ = 12600.

The previous prime is 19477. The next prime is 19483. The reversal of 19479 is 97491.

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

It is not a de Polignac number, because 19479 - 2¹ = 19477 is a prime.

It is a Duffinian number.

19479 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54 + ... + 204.

It is an arithmetic number, because the mean of its divisors is an integer number (3344).

2¹⁹⁴⁷⁹ is an apocalyptic number.

19479 is a deficient number, since it is larger than the sum of its proper divisors (7273).

19479 is a wasteful number, since it uses less digits than its factorization.

19479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197.

The product of its digits is 2268, while the sum is 30.

The square root of 19479 is about 139.5671881210. The cubic root of 19479 is about 26.9063974134.

The spelling of 19479 in words is "nineteen thousand, four hundred seventy-nine".