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4169 = 11379

4169 has 4 divisors (see below), whose sum is σ = 4560. Its totient is φ = 3780.

The previous prime is 4159. The next prime is 4177. The reversal of 4169 is 9614.

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 not a de Polignac number, because 4169 - 24 = 4153 is a prime.

It is a super-2 number, since 2×41692 = 34761122, which contains 22 as substring.

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

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 4169.

It is not an unprimeable number, because it can be changed into a prime (4129) 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, 179 + ... + 200.

It is an arithmetic number, because the mean of its divisors is an integer number (1140).

It is an amenable number.

4169 is a deficient number, since it is larger than the sum of its proper divisors (391).

4169 is a wasteful number, since it uses less digits than its factorization.

4169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390.

The product of its digits is 216, while the sum is 20.

The square root of 4169 is about 64.5677938294. The cubic root of 4169 is about 16.0944929277.

Subtracting 4169 from its reverse (9614), we obtain a palindrome (5445).

It can be divided in two parts, 4 and 169, that multiplied together give a palindrome (676).

The spelling of 4169 in words is "four thousand, one hundred sixty-nine".

Divisors: 1 11 379 4169