279143 has 2 divisors, whose sum is σ = 279144. Its totient is φ = 279142.

The previous prime is 279137. The next prime is 279173. The reversal of 279143 is 341972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 279143 - 2⁴ = 279127 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 279143.

It is not a weakly prime, because it can be changed into another prime (279173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139571 + 139572.

It is an arithmetic number, because the mean of its divisors is an integer number (139572).

2²⁷⁹¹⁴³ is an apocalyptic number.

279143 is a deficient number, since it is larger than the sum of its proper divisors (1).

279143 is an equidigital number, since it uses as much as digits as its factorization.

279143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 279143 is about 528.3398527463. The cubic root of 279143 is about 65.3545126624.

The spelling of 279143 in words is "two hundred seventy-nine thousand, one hundred forty-three".