279161 has 4 divisors (see below), whose sum is σ = 281424. Its totient is φ = 276900.

The previous prime is 279143. The next prime is 279173. The reversal of 279161 is 161972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-279161 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 279161.

It is not an unprimeable number, because it can be changed into a prime (279121) 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, 935 + ... + 1196.

It is an arithmetic number, because the mean of its divisors is an integer number (70356).

2²⁷⁹¹⁶¹ is an apocalyptic number.

It is an amenable number.

279161 is a deficient number, since it is larger than the sum of its proper divisors (2263).

279161 is a wasteful number, since it uses less digits than its factorization.

279161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262.

The product of its digits is 756, while the sum is 26.

The square root of 279161 is about 528.3568869618. The cubic root of 279161 is about 65.3559173856.

The spelling of 279161 in words is "two hundred seventy-nine thousand, one hundred sixty-one".