279385 has 8 divisors (see below), whose sum is σ = 340416. Its totient is φ = 220080.

The previous prime is 279353. The next prime is 279397. The reversal of 279385 is 583972.

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

It is not a de Polignac number, because 279385 - 2⁵ = 279353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 279385.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39 + ... + 748.

It is an arithmetic number, because the mean of its divisors is an integer number (42552).

2²⁷⁹³⁸⁵ is an apocalyptic number.

It is an amenable number.

279385 is a deficient number, since it is larger than the sum of its proper divisors (61031).

279385 is an equidigital number, since it uses as much as digits as its factorization.

279385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its digits is 15120, while the sum is 34.

The square root of 279385 is about 528.5688223874. The cubic root of 279385 is about 65.3733933362.

The spelling of 279385 in words is "two hundred seventy-nine thousand, three hundred eighty-five".