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2279 = 4353

2279 has 4 divisors (see below), whose sum is σ = 2376. Its totient is φ = 2184.

The previous prime is 2273. The next prime is 2281. The reversal of 2279 is 9722.

2279 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9722 = 24861.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2279 is a prime.

It is a pancake number, because a pancake can be divided into 2279 parts by 67 straight cuts.

It is a Duffinian number.

2279 is an undulating number in base 14.

It is a plaindrome in base 10 and base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2273) 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 3 ways as a sum of consecutive naturals, for example, 17 + ... + 69.

It is an arithmetic number, because the mean of its divisors is an integer number (594).

22279 is an apocalyptic number.

2279 is a deficient number, since it is larger than the sum of its proper divisors (97).

2279 is an equidigital number, since it uses as much as digits as its factorization.

2279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96.

The product of its digits is 252, while the sum is 20.

The square root of 2279 is about 47.7388730491. The cubic root of 2279 is about 13.1597642256.

It can be divided in two parts, 22 and 79, that added together give a palindrome (101).

The spelling of 2279 in words is "two thousand, two hundred seventy-nine".

Divisors: 1 43 53 2279