279996 has 12 divisors (see below), whose sum is σ = 653352. Its totient is φ = 93328.

The previous prime is 279991. The next prime is 280001. The reversal of 279996 is 699972.

It is an interprime number because it is at equal distance from previous prime (279991) and next prime (280001).

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11655 + ... + 11678.

It is an arithmetic number, because the mean of its divisors is an integer number (54446).

2²⁷⁹⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

279996 is an abundant number, since it is smaller than the sum of its proper divisors (373356).

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

279996 is a wasteful number, since it uses less digits than its factorization.

279996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23340 (or 23338 counting only the distinct ones).

The product of its digits is 61236, while the sum is 42.

The square root of 279996 is about 529.1464825547. The cubic root of 279996 is about 65.4210146722.

It can be divided in two parts, 279 and 996, that added together give a triangular number (1275 = T₅₀).

The spelling of 279996 in words is "two hundred seventy-nine thousand, nine hundred ninety-six".