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4279 = 11389
BaseRepresentation
bin1000010110111
312212111
41002313
5114104
631451
715322
oct10267
95774
104279
113240
122587
131c42
1417b9
151404
hex10b7

4279 has 4 divisors (see below), whose sum is σ = 4680. Its totient is φ = 3880.

The previous prime is 4273. The next prime is 4283. The reversal of 4279 is 9724.

Subtracting 4279 from its reverse (9724), we obtain a palindrome (5445).

It can be divided in two parts, 42 and 79, that added together give a palindrome (121).

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

It is a cyclic number.

It is not a de Polignac number, because 4279 - 23 = 4271 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a pancake number, because a pancake can be divided into 4279 parts by 92 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4271) 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, 184 + ... + 205.

It is an arithmetic number, because the mean of its divisors is an integer number (1170).

24279 is an apocalyptic number.

4279 is a deficient number, since it is larger than the sum of its proper divisors (401).

4279 is a wasteful number, since it uses less digits than its factorization.

4279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400.

The product of its digits is 504, while the sum is 22.

The square root of 4279 is about 65.4140657657. The cubic root of 4279 is about 16.2348181677.

The spelling of 4279 in words is "four thousand, two hundred seventy-nine".

Divisors: 1 11 389 4279