279960 has 32 divisors (see below), whose sum is σ = 840240. Its totient is φ = 74624.

The previous prime is 279949. The next prime is 279967. The reversal of 279960 is 69972.

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 279960.

It is not an unprimeable number, because it can be changed into a prime (279967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1047 + ... + 1286.

2²⁷⁹⁹⁶⁰ is an apocalyptic number.

279960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

279960 is an abundant number, since it is smaller than the sum of its proper divisors (560280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

279960 is a wasteful number, since it uses less digits than its factorization.

279960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2347 (or 2343 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 279960 is about 529.1124644156. The cubic root of 279960 is about 65.4182107542.

The spelling of 279960 in words is "two hundred seventy-nine thousand, nine hundred sixty".