279355 has 4 divisors (see below), whose sum is σ = 335232. Its totient is φ = 223480.

The previous prime is 279353. The next prime is 279397. The reversal of 279355 is 553972.

It is a happy number.

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

It is not a de Polignac number, because 279355 - 2¹ = 279353 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (279353) 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, 27931 + ... + 27940.

It is an arithmetic number, because the mean of its divisors is an integer number (83808).

2²⁷⁹³⁵⁵ is an apocalyptic number.

279355 is a deficient number, since it is larger than the sum of its proper divisors (55877).

279355 is an equidigital number, since it uses as much as digits as its factorization.

279355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55876.

The product of its digits is 9450, while the sum is 31.

The square root of 279355 is about 528.5404431072. The cubic root of 279355 is about 65.3710533490.

The spelling of 279355 in words is "two hundred seventy-nine thousand, three hundred fifty-five".