279023 has 2 divisors, whose sum is σ = 279024. Its totient is φ = 279022.

The previous prime is 279007. The next prime is 279029. The reversal of 279023 is 320972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 279023 - 2⁴ = 279007 is a prime.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 279023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139511 + 139512.

It is an arithmetic number, because the mean of its divisors is an integer number (139512).

2²⁷⁹⁰²³ is an apocalyptic number.

279023 is a deficient number, since it is larger than the sum of its proper divisors (1).

279023 is an equidigital number, since it uses as much as digits as its factorization.

279023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 279023 is about 528.2262772714. The cubic root of 279023 is about 65.3451462975.

Adding to 279023 its reverse (320972), we get a palindrome (599995).

The spelling of 279023 in words is "two hundred seventy-nine thousand, twenty-three".