280879 has 2 divisors, whose sum is σ = 280880. Its totient is φ = 280878.

The previous prime is 280871. The next prime is 280883. The reversal of 280879 is 978082.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 280879 - 2³ = 280871 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140439 + 140440.

It is an arithmetic number, because the mean of its divisors is an integer number (140440).

2²⁸⁰⁸⁷⁹ is an apocalyptic number.

280879 is a deficient number, since it is larger than the sum of its proper divisors (1).

280879 is an equidigital number, since it uses as much as digits as its factorization.

280879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 280879 is about 529.9801883090. The cubic root of 280879 is about 65.4897134362.

The spelling of 280879 in words is "two hundred eighty thousand, eight hundred seventy-nine".