279043 has 4 divisors (see below), whose sum is σ = 280368. Its totient is φ = 277720.

The previous prime is 279029. The next prime is 279047. The reversal of 279043 is 340972.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-279043 is a prime.

It is a d-powerful number, because it can be written as 2 + 7⁵ + 0 + 9 + 4⁹ + 3⁴ .

It is a Duffinian number.

279043 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 278999 and 279017.

It is not an unprimeable number, because it can be changed into a prime (279047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268 + ... + 793.

It is an arithmetic number, because the mean of its divisors is an integer number (70092).

2²⁷⁹⁰⁴³ is an apocalyptic number.

279043 is a deficient number, since it is larger than the sum of its proper divisors (1325).

279043 is a wasteful number, since it uses less digits than its factorization.

279043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324.

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

The square root of 279043 is about 528.2452082130. The cubic root of 279043 is about 65.3467075448.

The spelling of 279043 in words is "two hundred seventy-nine thousand, forty-three".