279801 has 16 divisors (see below), whose sum is σ = 425920. Its totient is φ = 181440.

The previous prime is 279779. The next prime is 279817. The reversal of 279801 is 108972.

It is not a de Polignac number, because 279801 - 2¹⁸ = 17657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 279801.

It is not an unprimeable number, because it can be changed into a prime (279001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1041 + ... + 1281.

It is an arithmetic number, because the mean of its divisors is an integer number (26620).

2²⁷⁹⁸⁰¹ is an apocalyptic number.

It is an amenable number.

279801 is a deficient number, since it is larger than the sum of its proper divisors (146119).

279801 is a wasteful number, since it uses less digits than its factorization.

279801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 279801 is about 528.9621914655. The cubic root of 279801 is about 65.4058239069.

The spelling of 279801 in words is "two hundred seventy-nine thousand, eight hundred one".