17879 has 4 divisors (see below), whose sum is σ = 18840. Its totient is φ = 16920.

The previous prime is 17863. The next prime is 17881. The reversal of 17879 is 97871.

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 17879 - 2⁴ = 17863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17839) 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, 452 + ... + 489.

It is an arithmetic number, because the mean of its divisors is an integer number (4710).

2¹⁷⁸⁷⁹ is an apocalyptic number.

17879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

17879 is a deficient number, since it is larger than the sum of its proper divisors (961).

17879 is an equidigital number, since it uses as much as digits as its factorization.

17879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960.

The product of its digits is 3528, while the sum is 32.

The square root of 17879 is about 133.7123778863. The cubic root of 17879 is about 26.1485578430.

The spelling of 17879 in words is "seventeen thousand, eight hundred seventy-nine".