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4369 = 17257

4369 has 4 divisors (see below), whose sum is σ = 4644. Its totient is φ = 4096.

The previous prime is 4363. The next prime is 4373. The reversal of 4369 is 9634.

Subtracting from 4369 its product of digits (648), we obtain a square (3721 = 612).

It can be divided in two parts, 4 and 369, that added together give a palindrome (373).

4369 is nontrivially palindromic in base 2, base 4 and base 16.

4369 is an esthetic number in base 4 and base 6, because in such bases its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9634 = 24817.

It can be written as a sum of positive squares in 2 ways, for example, as 3969 + 400 = 63^2 + 20^2 .

It is a 3-Lehmer number, since φ(4369) divides (4369-1)3.

It is a cyclic number.

It is not a de Polignac number, because 4369 - 25 = 4337 is a prime.

It is a super-2 number, since 2×43692 = 38176322, which contains 22 as substring.

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 an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

4369 is an undulating number in base 4.

4369 is a nontrivial repdigit in base 16.

It is a plaindrome in base 16.

It is a nialpdrome in base 16.

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (4363) by changing a digit.

It is a nontrivial repunit in base 16.

In principle, a polygon with 4369 sides can be constructed with ruler and compass.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112 + ... + 145.

It is an arithmetic number, because the mean of its divisors is an integer number (1161).

It is a Poulet number, since it divides 24368-1.

It is an amenable number.

4369 is a deficient number, since it is larger than the sum of its proper divisors (275).

4369 is a wasteful number, since it uses less digits than its factorization.

4369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274.

The product of its digits is 648, while the sum is 22.

The square root of 4369 is about 66.0984114786. The cubic root of 4369 is about 16.3478514074.

The spelling of 4369 in words is "four thousand, three hundred sixty-nine".

Divisors: 1 17 257 4369