279901 has 4 divisors (see below), whose sum is σ = 282492. Its totient is φ = 277312.

The previous prime is 279883. The next prime is 279913. The reversal of 279901 is 109972.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55225 + 224676 = 235^2 + 474^2 .

It is a cyclic number.

It is not a de Polignac number, because 279901 - 2¹⁷ = 148829 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 279901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279941) 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, 1126 + ... + 1351.

It is an arithmetic number, because the mean of its divisors is an integer number (70623).

2²⁷⁹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

279901 is a deficient number, since it is larger than the sum of its proper divisors (2591).

279901 is a wasteful number, since it uses less digits than its factorization.

279901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 279901 is about 529.0567077356. The cubic root of 279901 is about 65.4136149243.

The spelling of 279901 in words is "two hundred seventy-nine thousand, nine hundred one".