279223 has 8 divisors (see below), whose sum is σ = 322848. Its totient is φ = 236544.

The previous prime is 279221. The next prime is 279269. The reversal of 279223 is 322972.

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

It is not a de Polignac number, because 279223 - 2¹ = 279221 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2² + 7⁵ + 2⁸ + 9 + 2¹⁸ + 3 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615 + ... + 967.

It is an arithmetic number, because the mean of its divisors is an integer number (40356).

2²⁷⁹²²³ is an apocalyptic number.

279223 is a deficient number, since it is larger than the sum of its proper divisors (43625).

279223 is a wasteful number, since it uses less digits than its factorization.

279223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473.

The product of its digits is 1512, while the sum is 25.

The square root of 279223 is about 528.4155561677. The cubic root of 279223 is about 65.3607554145.

The spelling of 279223 in words is "two hundred seventy-nine thousand, two hundred twenty-three".