279860 has 24 divisors (see below), whose sum is σ = 672000. Its totient is φ = 95904.

The previous prime is 279857. The next prime is 279863. The reversal of 279860 is 68972.

It is an interprime number because it is at equal distance from previous prime (279857) and next prime (279863).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279863) 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, 860 + ... + 1139.

It is an arithmetic number, because the mean of its divisors is an integer number (28000).

2²⁷⁹⁸⁶⁰ is an apocalyptic number.

279860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

279860 is an abundant number, since it is smaller than the sum of its proper divisors (392140).

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

279860 is a wasteful number, since it uses less digits than its factorization.

279860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 2013 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 279860 is about 529.0179581073. The cubic root of 279860 is about 65.4104208316.

The spelling of 279860 in words is "two hundred seventy-nine thousand, eight hundred sixty".